5=7+2x 3y-6=y-2 7y+6=4y-3 9-6x=17+2x 8y-1/2y=3/4-9移项

问题描述:

5=7+2x 3y-6=y-2 7y+6=4y-3 9-6x=17+2x 8y-1/2y=3/4-9移项
(1)5=7+2x
(2)3y-6=y-2
(3)7y+6=4y-3
(4)9-6x=17+2x
(5)8y-1/2y=3/4-9移项

(1)5=7+2x
2x=5-7
(2)3y-6=y-2
3y-y=6-2
(3)7y+6=4y-3
7y-4y=-3-6
(4)9-6x=17+2x
6x+2x=9-17
(5)8y-1/2y=3/4-9
不需要移项了