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\left(\frac{12}{15}+\frac{20}{15}-2\right)\times \frac{7\times 2+1}{2}
Least common multiple of 5 and 3 is 15. Convert \frac{4}{5} and \frac{4}{3} to fractions with denominator 15.
\left(\frac{12+20}{15}-2\right)\times \frac{7\times 2+1}{2}
Since \frac{12}{15} and \frac{20}{15} have the same denominator, add them by adding their numerators.
\left(\frac{32}{15}-2\right)\times \frac{7\times 2+1}{2}
Add 12 and 20 to get 32.
\left(\frac{32}{15}-\frac{30}{15}\right)\times \frac{7\times 2+1}{2}
Convert 2 to fraction \frac{30}{15}.
\frac{32-30}{15}\times \frac{7\times 2+1}{2}
Since \frac{32}{15} and \frac{30}{15} have the same denominator, subtract them by subtracting their numerators.
\frac{2}{15}\times \frac{7\times 2+1}{2}
Subtract 30 from 32 to get 2.
\frac{2}{15}\times \frac{14+1}{2}
Multiply 7 and 2 to get 14.
\frac{2}{15}\times \frac{15}{2}
Add 14 and 1 to get 15.
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Cancel out \frac{2}{15} and its reciprocal \frac{15}{2}.