5x+4=70 15x-8x=7.84 m+5m=96
问题描述:
5x+4=70 15x-8x=7.84 m+5m=96
答
5x+4=70 15x-8x=7.84 m+5m=96
5x=70-4 7X=7.84 6m=96
5X=66 X=1.12 m=16
X=13.2