Solve for x
x=360
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7x+12\times 150=12x
Combine 3x and 4x to get 7x.
7x+1800=12x
Multiply 12 and 150 to get 1800.
7x+1800-12x=0
Subtract 12x from both sides.
-5x+1800=0
Combine 7x and -12x to get -5x.
-5x=-1800
Subtract 1800 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-1800}{-5}
Divide both sides by -5.
x=360
Divide -1800 by -5 to get 360.
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