100.6-45.75 +29.4-14.25
问题描述:
100.6-45.75 +29.4-14.25
答
100.6-45.75 +29.4-14.25
=100.6+29.4-14.25-45.75
=100.6+29.4-(14.25+45.75)
=130-60
=70