Расчет дроби 7(3/1) - 8(21/49) = 11/7

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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7
3
1
-
8
21
49
=
11
7
≈
1.571
Solution:
7
3
1
-
8
21
49
=
7*1+3
1
-
8*49+21
49
=
7+3
1
-
392+21
49
=
10
1
-
413
49
=
10*49
1*49
-
413
49
=
490
49
-
413
49
=
490-413
49
=
77
49
=
11*7
7*7
=
11
7
≈
1.571
Detailed explanation of the solution:
1.Conversion of mixed fractions to ordinary fractions
7
3
1
-
8
21
49
=
7*1+3
1
-
8*49+21
49
=
7+3
1
-
392+21
49
=
10
1
-
413
49
2.Bringing to a common denominator
10
1
-
413
49
=
10*49
1*49
-
413
49
=
490
49
-
413
49
3.Subtractionfractions with common denominators
490
49
-
413
49
=
490-413
49
=
77
49
4.Reduce the fraction and get the result
77
49
=
11*7
7*7
=
11
7
≈
1.571

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