递等式计算 20.5+1.8*4-22.5÷1.5
问题描述:
递等式计算 20.5+1.8*4-22.5÷1.5
答
20.5+1.8*4-22.5÷1.5
=20.5+7.2-15
=27.7-15
=12.7