Solve for x
x=80
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x=180\times \frac{4}{9}
Multiply both sides by \frac{4}{9}, the reciprocal of \frac{9}{4}.
x=\frac{180\times 4}{9}
Express 180\times \frac{4}{9} as a single fraction.
x=\frac{720}{9}
Multiply 180 and 4 to get 720.
x=80
Divide 720 by 9 to get 80.
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