Solve for x
x=220
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0.4x=188-100
Subtract 100 from both sides.
0.4x=88
Subtract 100 from 188 to get 88.
x=\frac{88}{0.4}
Divide both sides by 0.4.
x=\frac{880}{4}
Expand \frac{88}{0.4} by multiplying both numerator and the denominator by 10.
x=220
Divide 880 by 4 to get 220.
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