计算下面各题，能简算的就简算． 1﹣ ÷ ﹣ = 3+ × ÷ = ÷（ ﹣ ）× = × + ÷ =

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1﹣ $\text{[math]}$ ÷ $\text{[math]}$ ﹣ $\text{[math]}$ =	3+ $\text{[math]}$ × $\text{[math]}$ ÷ $\text{[math]}$ =	$\text{[math]}$ ÷（ $\text{[math]}$ ﹣ $\text{[math]}$ ）× $\text{[math]}$ =
$\text{[math]}$ × $\text{[math]}$ + $\text{[math]}$ ÷ $\text{[math]}$ =	78×150%﹣78× $\text{[math]}$ =	$\text{[math]}$ ×[1÷（ $\text{[math]}$ + $\text{[math]}$ ）]=

1. 计算下面各题，能简算的就简算． 1﹣ ÷ ﹣ = 3+ × ÷ = ÷（ ﹣ ）× = × + ÷ = 78×150%﹣78× = ×[1÷（ + ）]=