SOLUTION: please help solve this problem 11/2x + 4/7x I know first you find the LCD which is 14x but i don't know what you do after this 11/2x *14 + 4/7x *14

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: please help solve this problem 11/2x + 4/7x I know first you find the LCD which is 14x but i don't know what you do after this 11/2x *14 + 4/7x *14      Log On


   

Question 274285: please help solve this problem
11/2x + 4/7x
I know first you find the LCD which is 14x but i don't know what you do after this
11/2x *14 + 4/7x *14
Found 2 solutions by jim_thompson5910, checkley77:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
11%2F%282x%29+%2B+4%2F%287x%29 Start with the given expression.


%2811%2A7%29%2F%282x%2A7%29+%2B+4%2F%287x%29 Multiply both the numerator and denominator of the first fraction by 7 (to get the denominator equal to the LCD)


%2811%2A7%29%2F%282x%2A7%29+%2B+%284%2A2%29%2F%287x%2A2%29 Multiply both the numerator and denominator of the second fraction by 2 (to get the denominator equal to the LCD)


77%2F%2814x%29+%2B+8%2F%2814x%29 Multiply.


%2877%2B8%29%2F%2814x%29 Combine the fractions (this is now possible since the denominators are now equal).


85%2F%2814x%29 Add


So 11%2F%282x%29+%2B+4%2F%287x%29=85%2F%2814x%29 where x%3C%3E0

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
11/2x + 4/7x
11*7X/14+4*2X/14
77X/14+8X/14
85X/14 OR 6 1/14 ANS.