Solve for x
x=\frac{3}{8}=0.375
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x\left(\frac{12}{20}+\frac{5}{20}\right)-\frac{1}{4}=\frac{11}{160}
Least common multiple of 5 and 4 is 20. Convert \frac{3}{5} and \frac{1}{4} to fractions with denominator 20.
x\times \frac{12+5}{20}-\frac{1}{4}=\frac{11}{160}
Since \frac{12}{20} and \frac{5}{20} have the same denominator, add them by adding their numerators.
x\times \frac{17}{20}-\frac{1}{4}=\frac{11}{160}
Add 12 and 5 to get 17.
x\times \frac{17}{20}=\frac{11}{160}+\frac{1}{4}
Add \frac{1}{4} to both sides.
x\times \frac{17}{20}=\frac{11}{160}+\frac{40}{160}
Least common multiple of 160 and 4 is 160. Convert \frac{11}{160} and \frac{1}{4} to fractions with denominator 160.
x\times \frac{17}{20}=\frac{11+40}{160}
Since \frac{11}{160} and \frac{40}{160} have the same denominator, add them by adding their numerators.
x\times \frac{17}{20}=\frac{51}{160}
Add 11 and 40 to get 51.
x=\frac{51}{160}\times \frac{20}{17}
Multiply both sides by \frac{20}{17}, the reciprocal of \frac{17}{20}.
x=\frac{51\times 20}{160\times 17}
Multiply \frac{51}{160} times \frac{20}{17} by multiplying numerator times numerator and denominator times denominator.
x=\frac{1020}{2720}
Do the multiplications in the fraction \frac{51\times 20}{160\times 17}.
x=\frac{3}{8}
Reduce the fraction \frac{1020}{2720} to lowest terms by extracting and canceling out 340.
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