(x-2)+(x+2)+0.5x+2x等于多少个x?(x-2)+(x+2)+0.5x+2x等于多少x?要清楚!

问题描述:

(x-2)+(x+2)+0.5x+2x等于多少个x?
(x-2)+(x+2)+0.5x+2x等于多少x?要清楚!

4.5x

(x-2)+(x+2)+0.5x+2x
=2x+0.5x+2x
=4.5x

(x-2)+(x+2)+0.5x+2x
=x+x+0.5x+2x-2+2
=2x+2x+0.5x
=(2+2+0.5)x
=4.5x