Question

вычислите 3/8+1/2+1 1/4-(1/28+5/7)

Answer 1

1) 1/28+5/7=1/28+20/28=
21/28
2) 3/8+1/2=3/8+4/8=7/8
3) 7/8+1 1/4=7/8+10/8=17/8=
2 1/8
4) 2 1/8-21/28=28/176-
168/176=186/176=1 10/76