Question

вычислите дроби (2/15+1 7/12)*30/103-2:2 1/4*9/32+2 1/3

Answer 1

2/15+1 7/12=2/15+19/12=8/60+95/60=103/60

103/60×30/103=1/2

2÷2 1/4=2÷9/4=2×4/9=8/9

8/9×9/32=1/4

1/2-1/4=2/4-1/4=1/4

1/4+2 1/3=1/4+7/3=3/12+28/12=31/12=2 7/12