-8х + 4(7 + 8х) = 4х + 7
-8х + 28 + 32х = 4х + 7
24х + 28 = 4х + 7
24х - 4х = 7 - 28
20х = -21
х = -21/20
х = -1 1/20
х = -1,05
-8х + 4(7 + 8х) = 4х + 7
-8х + 28 + 32х = 4х + 7
24х + 28 = 4х + 7
24х - 4х = 7 - 28
20х = -21
х = -21/20
х = -1 1/20
х = -1,05