Solve for x
x=800
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600-0.25x=400
Swap sides so that all variable terms are on the left hand side.
-0.25x=400-600
Subtract 600 from both sides.
-0.25x=-200
Subtract 600 from 400 to get -200.
x=\frac{-200}{-0.25}
Divide both sides by -0.25.
x=\frac{-20000}{-25}
Expand \frac{-200}{-0.25} by multiplying both numerator and the denominator by 100.
x=800
Divide -20000 by -25 to get 800.
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