Solve for x
x=800
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9x=10\left(x+10\right)-900
Multiply both sides of the equation by 180, the least common multiple of 20,18.
9x=10x+100-900
Use the distributive property to multiply 10 by x+10.
9x=10x-800
Subtract 900 from 100 to get -800.
9x-10x=-800
Subtract 10x from both sides.
-x=-800
Combine 9x and -10x to get -x.
x=800
Multiply both sides by -1.
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