Solve for x
x=8
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x\times 21=56\times 3
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 56x, the least common multiple of 56,x.
x\times 21=168
Multiply 56 and 3 to get 168.
x=\frac{168}{21}
Divide both sides by 21.
x=8
Divide 168 by 21 to get 8.
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