вычеслите 4×(3 1/8×2/7+2 1/4)+1/2×1/4 пожалууййстаа

Question

вычеслите 4×(3 1/8×2/7+2 1/4)+1/2×1/4 пожалууййстаа

Answer 1

4×(3 1/8×2/7+2 1/4)+1/2×1/4=12 39/56

1)3 1/8×2/7=25/8×2/7=50/56=25/28
2)25/28+2 1/4=25/28+2 7/28=3 4/28
3)3 4/28×4=12 4/7
4)1/2×1/4=1/8
5)12 4/7+1/8=12 32/56+7/56= 12 39/56

Answer 2

4•3.8•0.2+5.25+0.5•0.25=3.04+5.25+0.125=8.415