Solve for x
x = \frac{25}{2} = 12\frac{1}{2} = 12.5
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2x+90-6x=40
Use the distributive property to multiply 6 by 15-x.
-4x+90=40
Combine 2x and -6x to get -4x.
-4x=40-90
Subtract 90 from both sides.
-4x=-50
Subtract 90 from 40 to get -50.
x=\frac{-50}{-4}
Divide both sides by -4.
x=\frac{25}{2}
Reduce the fraction \frac{-50}{-4} to lowest terms by extracting and canceling out -2.
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