计算(1)-2+1/3÷(-2) (2)(-3)²÷1/7×7

问题描述:

计算(1)-2+1/3÷(-2) (2)(-3)²÷1/7×7
(3)(-24)×(1/8-1/3+1/4)+(-2)³

(1)-2+1/3÷(-2)=-2-1/6=-2又1/6(2)(-3)²÷1/7×7=9÷1/7×7=9×7×7=441(3)(-24)×(1/8-1/3+1/4)+(-2)³=(-24)×(1/8-1/3+1/4)-8=-24×1/8+24×1/3-24×1/4-8=-3+8-6-8=-9...