Solve for x
x=0.5
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7x=2.1+1.4
Add 1.4 to both sides.
7x=3.5
Add 2.1 and 1.4 to get 3.5.
x=\frac{3.5}{7}
Divide both sides by 7.
x=\frac{35}{70}
Expand \frac{3.5}{7} by multiplying both numerator and the denominator by 10.
x=\frac{1}{2}
Reduce the fraction \frac{35}{70} to lowest terms by extracting and canceling out 35.
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