Solve for x
x=13
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65=x\times \frac{2}{0.4}
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
65=x\times \frac{20}{4}
Expand \frac{2}{0.4} by multiplying both numerator and the denominator by 10.
65=x\times 5
Divide 20 by 4 to get 5.
x\times 5=65
Swap sides so that all variable terms are on the left hand side.
x=\frac{65}{5}
Divide both sides by 5.
x=13
Divide 65 by 5 to get 13.
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