а) 3(х-7)-(9-2х)=2(12-х)-(х-10)3x - 21 - 9 + 6x = 24 - 2x - x + 109x - 30 = 14 - 3x12x = 44x = 44/12x = 11/3
б) 4(2-3x)-2(9x-8)=15(1-x)+3(4-x)8 - 12x - 18x + 16 = 15 - 15x + 12 - 3x8 - 30x + 16 = 27 - 18x-30x + 24 = 27 - 18x-12x = 3x = -3/12x = -1/4
а) 3(х-7)-(9-2х)=2(12-х)-(х-10)
3x - 21 - 9 + 6x = 24 - 2x - x + 10
9x - 30 = 14 - 3x
12x = 44
x = 44/12
x = 11/3
б) 4(2-3x)-2(9x-8)=15(1-x)+3(4-x)
8 - 12x - 18x + 16 = 15 - 15x + 12 - 3x
8 - 30x + 16 = 27 - 18x
-30x + 24 = 27 - 18x
-12x = 3
x = -3/12
x = -1/4