Skip to main content
Solve for x
Tick mark Image
Graph

Similar Problems from Web Search

Share

x\left(x+10\right)=\left(x-9\right)\times 6+\left(x-9\right)\left(x-5\right)
Variable x cannot be equal to any of the values -10,0,9 since division by zero is not defined. Multiply both sides of the equation by x\left(x-9\right)\left(x+10\right), the least common multiple of x-9,x^{2}+10x.
x^{2}+10x=\left(x-9\right)\times 6+\left(x-9\right)\left(x-5\right)
Use the distributive property to multiply x by x+10.
x^{2}+10x=6x-54+\left(x-9\right)\left(x-5\right)
Use the distributive property to multiply x-9 by 6.
x^{2}+10x=6x-54+x^{2}-14x+45
Use the distributive property to multiply x-9 by x-5 and combine like terms.
x^{2}+10x=-8x-54+x^{2}+45
Combine 6x and -14x to get -8x.
x^{2}+10x=-8x-9+x^{2}
Add -54 and 45 to get -9.
x^{2}+10x+8x=-9+x^{2}
Add 8x to both sides.
x^{2}+18x=-9+x^{2}
Combine 10x and 8x to get 18x.
x^{2}+18x-x^{2}=-9
Subtract x^{2} from both sides.
18x=-9
Combine x^{2} and -x^{2} to get 0.
x=\frac{-9}{18}
Divide both sides by 18.
x=-\frac{1}{2}
Reduce the fraction \frac{-9}{18} to lowest terms by extracting and canceling out 9.