(7.5-七分之四×7)×3分之2要简算,好的加你分,多多的,我等会要去上课,

问题描述:

(7.5-七分之四×7)×3分之2要简算,好的加你分,多多的,我等会要去上课,

(7.5-七分之四×7)×3分之2
=[7.5-(4/7)×7]×(2/3)
=(7.5-4)×(2/3)
=(15/2-8/2)×(2/3)
=(7/2)×(2/3)
=7/3