(7.8乘4.8乘7.5)除以(3.9乘2.4乘1.5)简算.

问题描述:

(7.8乘4.8乘7.5)除以(3.9乘2.4乘1.5)简算.

(7.8x4.8x7.5)/(3.9x2.4x1.5)
=(7.8/3.9)x(4.8/2.4)x(7.5/1.5)
=2x2x5
=20