Solve for x
x=\frac{20}{23}\approx 0.869565217
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1.15x=1
Combine 0.15x and x to get 1.15x.
x=\frac{1}{1.15}
Divide both sides by 1.15.
x=\frac{100}{115}
Expand \frac{1}{1.15} by multiplying both numerator and the denominator by 100.
x=\frac{20}{23}
Reduce the fraction \frac{100}{115} to lowest terms by extracting and canceling out 5.
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