(负8)x(负7.2)x(负2.5)x(+12分之5)
问题描述:
(负8)x(负7.2)x(负2.5)x(+12分之5)
答
(-8)x(-7.2)x(-2.5)x5/12
=(-8)*(-2.5)*(-7.2)*5/12
=20*(-7.2)*5/12
=-144*5/12
=-60