27×(2/27-2/37)×37简算要过程

问题描述:

27×(2/27-2/37)×37简算要过程

27×(2/27-2/37)×37
=27×2/27×37-27×2/37×37
=2×37-2×27
=2×(37-27)
=2×10
=20

27×(2/27-2/37)×37
=27×2/27×37-27×2/37×37
=2×37-27×2
=74-54
=20