Solve for x
x=\frac{2}{5}=0.4
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30x-12=0
Combine 25x and 5x to get 30x.
30x=12
Add 12 to both sides. Anything plus zero gives itself.
x=\frac{12}{30}
Divide both sides by 30.
x=\frac{2}{5}
Reduce the fraction \frac{12}{30} to lowest terms by extracting and canceling out 6.
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