计算下面各题 -= += += 1-= -= += -=-= +=【参考答案】

试题详情

计算下面各题

$\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

1- $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

$\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ - $\text{[math]}$ = $\text{[math]}$ + $\text{[math]}$ =

知识点

参考答案