5х-12-9х-4+(-5х)-8=10
5х-9х-5х=10+12+4
х=26
6х-12-9х+4-5х-8-10 = 0
-8х-26 =0
-8х = 26
х = 26/(-8) = -3.25
ответ: 3.25
5х-12-9х-4+(-5х)-8=10
5х-9х-5х=10+12+4
х=26
6х-12-9х+4-5х-8-10 = 0
-8х-26 =0
-8х = 26
х = 26/(-8) = -3.25
ответ: 3.25