Question

a)2/5÷3/7 b)-1/8÷1/4 c)1/2÷4/5 d)11/18÷(-5/9) даю 50 балов​

Answer 1

Пошаговое объяснение:

а) 2/5 + 3/7 = 14/35 + 15/35 = 29/35

б) -1/8 + 1/4 = -1/8 + 2/8 = 1/8

с) 1/2 + 4/5 = 5/10 + 8/10 = 13/10 = 1 3/10

д) 11/18 + (-5/9) = 11/18 - 5/9 = 11/18 - 10/18 = 1/18