Solve for x
x=50
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2x+20-2.4x=0
Subtract 2.4x from both sides.
-0.4x+20=0
Combine 2x and -2.4x to get -0.4x.
-0.4x=-20
Subtract 20 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-20}{-0.4}
Divide both sides by -0.4.
x=\frac{-200}{-4}
Expand \frac{-20}{-0.4} by multiplying both numerator and the denominator by 10.
x=50
Divide -200 by -4 to get 50.
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