Solve for x
x=0.72
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5x-2.8=0.8
Multiply 0.7 and 4 to get 2.8.
5x=0.8+2.8
Add 2.8 to both sides.
5x=3.6
Add 0.8 and 2.8 to get 3.6.
x=\frac{3.6}{5}
Divide both sides by 5.
x=\frac{36}{50}
Expand \frac{3.6}{5} by multiplying both numerator and the denominator by 10.
x=\frac{18}{25}
Reduce the fraction \frac{36}{50} to lowest terms by extracting and canceling out 2.
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