Solve for x
x=3
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-0.2=1-0.4x
Subtract 0.5 from 0.3 to get -0.2.
1-0.4x=-0.2
Swap sides so that all variable terms are on the left hand side.
-0.4x=-0.2-1
Subtract 1 from both sides.
-0.4x=-1.2
Subtract 1 from -0.2 to get -1.2.
x=\frac{-1.2}{-0.4}
Divide both sides by -0.4.
x=\frac{-12}{-4}
Expand \frac{-1.2}{-0.4} by multiplying both numerator and the denominator by 10.
x=3
Divide -12 by -4 to get 3.
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