1) 6x=28-x
6х+х=28
7х=28
х=4.
2) 9x-26=30-5x
9х+5х=30+26
14х=56
х=4
3) 7-3x =6x-56
-3х-6х=-56-7
9х=63
х=7.
1) 6x=28-x
6х+х=28
7х=28
х=4.
2) 9x-26=30-5x
9х+5х=30+26
14х=56
х=4
3) 7-3x =6x-56
-3х-6х=-56-7
9х=63
х=7.