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\frac{16}{12}-\frac{15}{12}=1.6x
Least common multiple of 3 and 4 is 12. Convert \frac{4}{3} and \frac{5}{4} to fractions with denominator 12.
\frac{16-15}{12}=1.6x
Since \frac{16}{12} and \frac{15}{12} have the same denominator, subtract them by subtracting their numerators.
\frac{1}{12}=1.6x
Subtract 15 from 16 to get 1.
1.6x=\frac{1}{12}
Swap sides so that all variable terms are on the left hand side.
x=\frac{\frac{1}{12}}{1.6}
Divide both sides by 1.6.
x=\frac{1}{12\times 1.6}
Express \frac{\frac{1}{12}}{1.6} as a single fraction.
x=\frac{1}{19.2}
Multiply 12 and 1.6 to get 19.2.
x=\frac{10}{192}
Expand \frac{1}{19.2} by multiplying both numerator and the denominator by 10.
x=\frac{5}{96}
Reduce the fraction \frac{10}{192} to lowest terms by extracting and canceling out 2.