其实,我不是为了得到采纳,我只是看到你采纳了错的答案,那个方法一点也不简便,看看我的吧!:
3.6–3.6×0.25
=3.6–(4×0.9)×0.25
=3.6–4×0.25×0.9
=3.6–1×0.9
=3.6–0.9
=2.7
3.6-3.6*0.25
=3.6*1-3.6*0.25
=3.6*(1-0.25)
=3.6*0.75
=答案自己算
3.6-3.6*0.25
=3.6*1-3.6*0.25
=3.6*(1-0.25)
=3.6*0.75
=2.7
第二题等于3.6X(1一3.6)
等于3.6X0.75
等于2.7
第一题看不清