# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 308676: Is this the correct way to solve this problem? (2x + 7) / ( x - 7) - (2x - 7) / (x + 7) LCM= (x+7)(x-7) (2x+7)(x+7) - (2x-7)(x-7) / (x+7)(x-7) 2x^2 +14x+7x+49- (2x^2-14x-7x+49)/(x+7)(x-7) 2x^2 +14x+7x+49- 2x^2+14x+7x-49/(x+7)(x-7) 42x /(x+7)(x-7) Click here to see answer by rapaljer(4667)

 Question 308675: How do I add this fraction? y / (x^2 – xy) - x / (y^2 – xy) Click here to see answer by rapaljer(4667)
 Question 308675: How do I add this fraction? y / (x^2 – xy) - x / (y^2 – xy) Click here to see answer by Fombitz(13828)
 Question 308675: How do I add this fraction? y / (x^2 – xy) - x / (y^2 – xy) Click here to see answer by CharlesG2(828)

 Question 308690: if a taxi cab driver charges .50 for the first 1/5 mile and then charges .20 every 1/10 mile. how much will the fee be for a 2 mile cab fare Click here to see answer by CharlesG2(828)

 Question 308677: How do I multiply this fraction? [ (x2 – y2) / (x2 + xy) ][ (3x2 + 6xy ) / (x2 + xy – 2y2) ] Click here to see answer by CharlesG2(828)

 Question 308691: If x^2 + x – 6 = 0, then x is: Click here to see answer by texttutoring(324)

 Question 308784: I wanted to know how do you solve this equation(n+2)(2n+5)=0 Click here to see answer by Fombitz(13828)

 Question 308794: Can a variable be solved with an equal sign? Click here to see answer by stanbon(57377)

 Question 308822: I was wondering what the pressure must be a mile deep in the water. If water weighs 59.52 lbs/ft^3, what pressure in pounds per square inch would it cause at 5,280 feet below the surface? Hint: Calculate the weight of a column of water with an area of 1 square inch and 5,280 feet high. Click here to see answer by Fombitz(13828)

 Question 308836: Gorillas and chimpanzeea can learn sign language by 1982 a gorilla named koko had learned 700 words. This is 50 fewer than 5 times as many words as a chimpanzee named washoe knew 10 years earlier. How many words did washoe know? I need help writing an equation and solving plz Click here to see answer by stanbon(57377)

 Question 308779: when x=4 then y=240 find y when x=8 Click here to see answer by solver91311(16897)

 Question 308911: Not exactly sure where this type of equation fits in but I am in need of obtaining assistance. A college student invested part of a \$25,000 inheritance at 7% interest and the rest at 6%. If his annual interest is \$1,671 how much did he invest at 6%? If the answer is \$8,000, explain how you would solve the problem Click here to see answer by scott8148(6628)
 Question 308911: Not exactly sure where this type of equation fits in but I am in need of obtaining assistance. A college student invested part of a \$25,000 inheritance at 7% interest and the rest at 6%. If his annual interest is \$1,671 how much did he invest at 6%? If the answer is \$8,000, explain how you would solve the problem Click here to see answer by Earlsdon(6287)

 Question 308972: ( pretend the { is one big one ) Click here to see answer by ichudov(499)
 Question 308972: ( pretend the { is one big one ) Click here to see answer by jim_thompson5910(28598)

 Question 309015: I need to solve this equation, how would I write it out? Find the exact answer and simplify it using the rules for radicals. Diagonal of a patio. Find the length of the diagonal of a square patio with an area of 40 square meters. Click here to see answer by mollukutti(30)

 Question 308986: Did I work this problem out correctly? [ (x2 + 3x + 9) / (x2 – 9) ][ (x + 3) / (x3 - 27) ] (x2 + 3x + 9) / (x-3)(x + 3) (x + 3) / (x – 3) (x2 + 3x + 9) 1 / x – 32 Click here to see answer by mananth(12270)

 Question 309012: I need to find all real or imaginary solutions to this equation. Use the method of your choice. √7x+29 = x + 3 note: sqrt extends over 7x+29 Click here to see answer by ankor@dixie-net.com(15659)

 Question 309231: This actually has to do with radical equations, but can you please explain how you'd solve the equation 1 over t-2 = t over 8. I think you can read that better, but its 1/t-2 = t/8, and I'm supposed to solve for t. Thank for your very valuable time. Click here to see answer by jim_thompson5910(28598)

 Question 309238: x + 5/6 = 3 1/2 can you please show me step by step to solving this problem Click here to see answer by Alan3354(30993)
 Question 309238: x + 5/6 = 3 1/2 can you please show me step by step to solving this problem Click here to see answer by solver91311(16897)

 Question 309010: How do I find the answer to this problem? Recovering an investment. The manager at Cream of the Crop bought a load of watermelons for \$200. She priced the melons so that she would make \$1.50 profit on each melon. When all but 30 had been sold, the manager had recovered her initial investment. How many did she buy originally? Click here to see answer by scott8148(6628)