Solve for x
x=20
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x\times 2=4\times 10
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.
x\times 2=40
Multiply 4 and 10 to get 40.
x=\frac{40}{2}
Divide both sides by 2.
x=20
Divide 40 by 2 to get 20.
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