Расчет дроби 1(3/7) - 8(21/49) = -343/49

The online fraction calculator allows you to perform basic actions with fractions: addition, subtraction, multiplication and division. As well as reduction, reduction to a common denominator and simplification.


To calculate the sum, difference, product or quotient of two fractions and get a detailed solution, enter the numerator and denominator of each fraction and, if available, the integer part. Next, select the necessary operation from the list. If necessary, enter a negative fraction, put a minus sign "-" in the integer part of the fraction.

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1
3
7
-
8
21
49
=
-343
49
Solution:
1
3
7
-
8
21
49
=
1*7+3
7
-
8*49+21
49
=
7+3
7
-
392+21
49
=
10
7
-
413
49
=
10*7
7*7
-
413
49
=
70
49
-
413
49
=
70-413
49
=
-343
49
Detailed explanation of the solution:
1.Conversion of mixed fractions to ordinary fractions
1
3
7
-
8
21
49
=
1*7+3
7
-
8*49+21
49
=
7+3
7
-
392+21
49
=
10
7
-
413
49
2.Bringing to a common denominator
10
7
-
413
49
=
10*7
7*7
-
413
49
=
70
49
-
413
49
3.Subtractionfractions with common denominators
70
49
-
413
49
=
70-413
49
=
-343
49

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