Solve for x
x=0.1
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4x=1.2-0.8
Subtract 0.8 from both sides.
4x=0.4
Subtract 0.8 from 1.2 to get 0.4.
x=\frac{0.4}{4}
Divide both sides by 4.
x=\frac{4}{40}
Expand \frac{0.4}{4} by multiplying both numerator and the denominator by 10.
x=\frac{1}{10}
Reduce the fraction \frac{4}{40} to lowest terms by extracting and canceling out 4.
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