Question

вычислите ( 2 2\3-1 1\4)+ 4 1\3 помогите

Answer 1

1) 2 2/3-1 1/4=2 8/12- 1 3/12= 1 5/12

2)1 5/12+4 1/3= 1 5/12+4 4/12=5 9/12

Answer 2

Пошаговое объяснение:

1) 2 2/3 - 1 1/4 = 2 + 2·3/3 - 1 + 1·4/4 = 8/3 - 5/4 = 8·4 3·4 - 5·3 4·3 = 32/12 - 15/12 = 32 - 15/12 = 17/12 = 1·12 + 5/12 = 1 5/12

2) 1 5/12 + 4 1/3 = 5 + 5/12 + 1/3 = 5 + 5 · 1 12 · 1 + 1 · 4/3 · 4 = 5 + 5/12 + 4/12 = 5 + 5 + 4/12 = 5 + 9/12 = 5 + 3 · 3/4 · 3 = 5 + 3/4 = 5 3/4