[ 18.9-(11.7-4.05 ]×0.72能简算吗
问题描述:
[ 18.9-(11.7-4.05 ]×0.72能简算吗
答
[ 18.9-(11.7-4.05 ]×0.72
=(18.9-7.65)x0.72
=11.25x0.72
=11.25x4x0.18
=45x0.18
=50x0.18-5x0.18
=9-0.9
=8.1
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