Solve for x
x=9
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4x=3\times 12
Multiply both sides of the equation by 12, the least common multiple of 3,4.
4x=36
Multiply 3 and 12 to get 36.
x=\frac{36}{4}
Divide both sides by 4.
x=9
Divide 36 by 4 to get 9.
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