Solve for x
x=100
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1.8x=180
Combine x and x\times 0.8 to get 1.8x.
x=\frac{180}{1.8}
Divide both sides by 1.8.
x=\frac{1800}{18}
Expand \frac{180}{1.8} by multiplying both numerator and the denominator by 10.
x=100
Divide 1800 by 18 to get 100.
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