Solve for x
x = \frac{12}{7} = 1\frac{5}{7} \approx 1.714285714
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4x+3x=12
Multiply both sides of the equation by 12, the least common multiple of 3,4.
7x=12
Combine 4x and 3x to get 7x.
x=\frac{12}{7}
Divide both sides by 7.
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