11分之5×0.7×11分之2×10分之7+70%×11分之4简便计算

2025-02-27 19:51:16
推荐回答(1个)
回答1:

11分之5×0.7×11分之2×10分之7+70%×11分之4
=0.7*(5/11*2/11*7/10+4/11)
=0.7*(7/121+44/121)
=0.7*51/121
=35.7/121