Solve for x
x=1.4
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2x+1.2=4
Multiply 3 and 0.4 to get 1.2.
2x=4-1.2
Subtract 1.2 from both sides.
2x=2.8
Subtract 1.2 from 4 to get 2.8.
x=\frac{2.8}{2}
Divide both sides by 2.
x=\frac{28}{20}
Expand \frac{2.8}{2} by multiplying both numerator and the denominator by 10.
x=\frac{7}{5}
Reduce the fraction \frac{28}{20} to lowest terms by extracting and canceling out 4.
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