Solve for x
x=8
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40\times 2=x\times 10
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 40x, the least common multiple of x,40.
80=x\times 10
Multiply 40 and 2 to get 80.
x\times 10=80
Swap sides so that all variable terms are on the left hand side.
x=\frac{80}{10}
Divide both sides by 10.
x=8
Divide 80 by 10 to get 8.
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