Solve for x
x = \frac{129}{5} = 25\frac{4}{5} = 25.8
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5x+21=150
Multiply both sides of the equation by 15, the least common multiple of 3,5.
5x=150-21
Subtract 21 from both sides.
5x=129
Subtract 21 from 150 to get 129.
x=\frac{129}{5}
Divide both sides by 5.
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