# SOLUTION: need to solve and check the equation 15 / x + 9x-7 / x+2 = 9 This is 15 over x added to 9x-7 over x+2 equals 9 I know you need to find the LCD but I keep coming up with different

Algebra ->  Algebra  -> Rational-functions -> SOLUTION: need to solve and check the equation 15 / x + 9x-7 / x+2 = 9 This is 15 over x added to 9x-7 over x+2 equals 9 I know you need to find the LCD but I keep coming up with different      Log On

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 Question 20751: need to solve and check the equation 15 / x + 9x-7 / x+2 = 9 This is 15 over x added to 9x-7 over x+2 equals 9 I know you need to find the LCD but I keep coming up with different answers Please helpAnswer by MORUPHOSUOLALE(24)   (Show Source): You can put this solution on YOUR website!Its just a simple equation if you know each simple steps. 15/X + 9X-7/x+2=9 The best and easy way is to cross multtiply. The equation will become- 15(x+2)+9x-7(x)=(x)(x+2}(9) 15X+30+9x^2-7x=(x^2+2X}(9) 15x+30+9X^2-7x=9x^2+18x collecting like terms- 9x^2-9x^2+15x-7x-18x=-30 15x-25x=-30 -10x=-30 x=-30/-10 x=3 TO CHECK IF WE GOT THE RIGHT ANSWER plug in (3) the value of x into the equation and the left hand side of the equation must equal to the rght hand side lets see- 15/x + 9x-7/x+2=9 15/3+9(3)-7/3+2=9 5 + 27-7/5 = 9 5+20/5 = 9 5+4 = 9 9 = 9 moruph osuolale, central piedmont college, charlotte,nc