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1, plus, left parenthesis, 3, times, 4, right parenthesis, slash, left parenthesis, 3, plus, 4, times, 9, right parenthesis
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1+\frac{12}{3+4\times 9}
Multiply 3 and 4 to get 12.
1+\frac{12}{3+36}
Multiply 4 and 9 to get 36.
1+\frac{12}{39}
Add 3 and 36 to get 39.
1+\frac{4}{13}
Reduce the fraction \frac{12}{39} to lowest terms by extracting and canceling out 3.
\frac{13}{13}+\frac{4}{13}
Convert 1 to fraction \frac{13}{13}.
\frac{13+4}{13}
Since \frac{13}{13} and \frac{4}{13} have the same denominator, add them by adding their numerators.
\frac{17}{13}
Add 13 and 4 to get 17.