5.5x-1.3x=12.6 3.85+1.5x=6.1 6x-0.9=4.5 4×4.5-3x=6.33.
问题描述:
5.5x-1.3x=12.6
3.85+1.5x=6.1
6x-0.9=4.5
4×4.5-3x=6.33.
答
5.5X-1.3X=12.6, 4.2X=12.6, 4.2X÷4.2=12.6÷4.2, X=3; ...