Solve for x
x=0.8
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2x+8.4=10
Multiply 3 and 2.8 to get 8.4.
2x=10-8.4
Subtract 8.4 from both sides.
2x=1.6
Subtract 8.4 from 10 to get 1.6.
x=\frac{1.6}{2}
Divide both sides by 2.
x=\frac{16}{20}
Expand \frac{1.6}{2} by multiplying both numerator and the denominator by 10.
x=\frac{4}{5}
Reduce the fraction \frac{16}{20} to lowest terms by extracting and canceling out 4.
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