Solve for x
x=12
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3x=4\times 9
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4x, the least common multiple of 4,x.
3x=36
Multiply 4 and 9 to get 36.
x=\frac{36}{3}
Divide both sides by 3.
x=12
Divide 36 by 3 to get 12.
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