Solve for x
x=\frac{4}{5}=0.8
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5\times 3x+8=20
Multiply both sides of the equation by 10, the least common multiple of 2,5.
15x+8=20
Multiply 5 and 3 to get 15.
15x=20-8
Subtract 8 from both sides.
15x=12
Subtract 8 from 20 to get 12.
x=\frac{12}{15}
Divide both sides by 15.
x=\frac{4}{5}
Reduce the fraction \frac{12}{15} to lowest terms by extracting and canceling out 3.
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