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19,75-3,21\times \frac{2\times 11+1}{11}
Multiply 0,25 and 79 to get 19,75.
19,75-3,21\times \frac{22+1}{11}
Multiply 2 and 11 to get 22.
19,75-3,21\times \frac{23}{11}
Add 22 and 1 to get 23.
19,75-\frac{321}{100}\times \frac{23}{11}
Convert decimal number 3,21 to fraction \frac{321}{100}.
19,75-\frac{321\times 23}{100\times 11}
Multiply \frac{321}{100} times \frac{23}{11} by multiplying numerator times numerator and denominator times denominator.
19,75-\frac{7383}{1100}
Do the multiplications in the fraction \frac{321\times 23}{100\times 11}.
\frac{79}{4}-\frac{7383}{1100}
Convert decimal number 19,75 to fraction \frac{1975}{100}. Reduce the fraction \frac{1975}{100} to lowest terms by extracting and canceling out 25.
\frac{21725}{1100}-\frac{7383}{1100}
Least common multiple of 4 and 1100 is 1100. Convert \frac{79}{4} and \frac{7383}{1100} to fractions with denominator 1100.
\frac{21725-7383}{1100}
Since \frac{21725}{1100} and \frac{7383}{1100} have the same denominator, subtract them by subtracting their numerators.
\frac{14342}{1100}
Subtract 7383 from 21725 to get 14342.
\frac{7171}{550}
Reduce the fraction \frac{14342}{1100} to lowest terms by extracting and canceling out 2.