-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×(9/36-4/36-3/36)×1/2
=18×1/18
=1

原式=-36×(9/36-4/36-3/36)÷(-2)
=-36×(9-4-3/36)÷(-2)
=-36×(2/36)÷(-2)
=-36×(1/18)÷(-2)
=(-2)÷(-2)
=1

-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