递等式计算5·8×1·7-2.3×0.8
问题描述:
递等式计算5·8×1·7-2.3×0.8
答
5·8×1.7-2.3×0.8
=5×1.7+0.8×1.7-2.3×0.8
=8.5-0.8×(2.3-1.7)
=8.5-0.8×0.6
=8.5-0.48
=8.02