Solve for x
x=900
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0.9x=830-20
Subtract 20 from both sides.
0.9x=810
Subtract 20 from 830 to get 810.
x=\frac{810}{0.9}
Divide both sides by 0.9.
x=\frac{8100}{9}
Expand \frac{810}{0.9} by multiplying both numerator and the denominator by 10.
x=900
Divide 8100 by 9 to get 900.
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