﹣2+﹙1-0.2÷5分之3﹚×﹙﹣3﹚

问题描述:

﹣2+﹙1-0.2÷5分之3﹚×﹙﹣3﹚

﹣2+﹙1-0.2÷5分之3﹚×﹙﹣3﹚
= -2+(1-1/3)x(-3)
= -2+2/3x(-3)
= -2+(-2)
= -2-2
= -4