(9/11-5/22)•88;
(13/15-1/5)•30;
12 7/40•80

Предыдущий
вопрос Следующий
вопрос

To solve these expressions, we need to follow the order of operations (parentheses, exponents, multiplication/division, addition/subtraction) and remember to convert mixed numbers to improper fractions if needed.

(9/11 - 5/22) • 88:
First, find a common denominator for 11 and 22, which is 22.
(18/22 - 5/22) • 88
(13/22) • 88
Multiplying fractions: (13/22) * (88/1) = 1144/22 = 52

(13/15 - 1/5) • 30:
First, find a common denominator for 15 and 5, which is 15.
(13/15 - 3/15) • 30
(10/15) • 30
Multiplying fractions: (10/15) * (30/1) = 300/15 = 20

12 7/40 • 80:
Convert mixed number to an improper fraction: (1240 + 7)/40 = 487/40
Multiplying fractions: (487/40) (80/1) = 38960/40 = 974

Therefore, the results are: