1.4+0.6x86

简便计算
2025-04-07 03:46:10
推荐回答(2个)
回答1:

1.4+0.6*86
=1.4+0.6*(80+6)
=1.4+0.6*80+0.6*6
=1.4+48+3.6
=5+48
=53

回答2:

1.4+0.6*86
=1.4+0.6+0.6*85
=2+60-0.6*15
=53