Solve for x
x=80
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100\times 64=x\times 80
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 100x, the least common multiple of x,100.
6400=x\times 80
Multiply 100 and 64 to get 6400.
x\times 80=6400
Swap sides so that all variable terms are on the left hand side.
x=\frac{6400}{80}
Divide both sides by 80.
x=80
Divide 6400 by 80 to get 80.
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