1) 2(х-3) = 7(2+х)
2х - 6 = 14 + 7х
2х - 7х = 14 + 6
-5х = 20
х = 20 : -5
х= -4
2)11+3х = 55+ 4х
3х - 4х = 55 - 11
-1х = 40
х= -40
4) 17(5+х) - 20х = 8х - 14
85 + 17х - 20х = 8х - 14
20х - 17х - 8х = -14 - 85
-5х = -99
х = -99 : -5
х= 19,8
3 прости не могу
1) 2(х-3) = 7(2+х)
2х - 6 = 14 + 7х
2х - 7х = 14 + 6
-5х = 20
х = 20 : -5
х= -4
2)11+3х = 55+ 4х
3х - 4х = 55 - 11
-1х = 40
х= -40
4) 17(5+х) - 20х = 8х - 14
85 + 17х - 20х = 8х - 14
20х - 17х - 8х = -14 - 85
-5х = -99
х = -99 : -5
х= 19,8
3 прости не могу