如题所述
第1个回答 2019-09-14
运算规则如此,公因数5.2,第一项5.2可表述成5.2×1
第2个回答 2019-09-14
提取公因数
aXb+aXc
=aX(b+c)
5.2-5.2X0.5-0.5
=5.2X(1-0.5)-0.5 (提取公因数5.2)
=5.2X0.5-0.5
=0.5X(5.2-1) (提取公因数0.5)
=0.5X4.2
=2.1本回答被网友采纳
aXb+aXc
=aX(b+c)
5.2-5.2X0.5-0.5
=5.2X(1-0.5)-0.5 (提取公因数5.2)
=5.2X0.5-0.5
=0.5X(5.2-1) (提取公因数0.5)
=0.5X4.2
=2.1本回答被网友采纳
第3个回答 2019-09-14
5.2-5.2×0.5-0.5计算如下:
5.2-5.2×0.5-0.5
=5.2×1-5.2×0.5-0.5
=5.2×(1-0.5)-0.5
5.2-5.2×0.5-0.5
=5.2×1-5.2×0.5-0.5
=5.2×(1-0.5)-0.5