80 \div 180=x \%
Solve for x
x = \frac{400}{9} = 44\frac{4}{9} \approx 44.444444444
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5\times 80=9x
Multiply both sides of the equation by 900, the least common multiple of 180,100.
400=9x
Multiply 5 and 80 to get 400.
9x=400
Swap sides so that all variable terms are on the left hand side.
x=\frac{400}{9}
Divide both sides by 9.
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