-36×(1/4-1/9-1/12)÷(-2) 等于多少?

问题描述:

-36×(1/4-1/9-1/12)÷(-2) 等于多少?

-36×(1/4-1/9-1/12)÷(-2)
=﹣36×﹙﹤9﹣4﹣3﹥/36﹚×﹙﹣1/2﹚
=﹣36×﹙﹣1/2﹚×﹙2/36﹚
=36×﹙1/2﹚×2×1/36
=1