Solve for x
x = \frac{12}{7} = 1\frac{5}{7} \approx 1.714285714
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7x-12=0
Combine 2x and 5x to get 7x.
7x=12
Add 12 to both sides. Anything plus zero gives itself.
x=\frac{12}{7}
Divide both sides by 7.
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