а) 12х-(7-3х)=4х
12x – 7 + 3x = 4x
12x + 3x – 4x = 7
11x = 7
x = 7/11
х=0,63636363636
б) 8х+3=1-(2х+4)
8x + 3 = 1 – 2x – 4
8x + 2x = – 4 + 1 – 3
10x = -6
x = -0.6
в) х-2-(3+(7-2х))= -6
раскроем скобки
x-2-3-7+2x = -6
3x-6 = 0
3x = 6
x = 2
г) 1,6(5-х)=1,5(4-х)
8 – 1.6x = 6 – 1.5x
– 1,6x + 1,5x = 6 – 8
-0.1x = -2
x = 20
а) 12х-(7-3х)=4х
12x – 7 + 3x = 4x
12x + 3x – 4x = 7
11x = 7
x = 7/11
х=0,63636363636
б) 8х+3=1-(2х+4)
8x + 3 = 1 – 2x – 4
8x + 2x = – 4 + 1 – 3
10x = -6
x = -0.6
в) х-2-(3+(7-2х))= -6
раскроем скобки
x-2-3-7+2x = -6
3x-6 = 0
3x = 6
x = 2
г) 1,6(5-х)=1,5(4-х)
8 – 1.6x = 6 – 1.5x
– 1,6x + 1,5x = 6 – 8
-0.1x = -2
x = 20