3.5乘2加6.5乘2-2简便计算?

2025-12-14 07:49:04
推荐回答(2个)
回答1:

计算如下:
3.5乘2加6.5乘2-2
=3.5×2+6.5×2-2
=(3.5+6.5)×2-2
=10×2-2
=20-2
=18

回答2:

3.5x2+6.5x2-2
=2x(3.5+6.5-1)
=2x9
=18