1. -12(2-x)=-6x+2
– 24 + 12x = – 6x + 2
12x + 6x = 2 + 24
18x = 26
9x = 13
x = 13/9
х=1,44444444444
2. -(x-3)+2(3-x)=5
– x + 3 + 6 – 2x = 5
– x – 2x = 5 – 6 – 3
-3x = -4
x = -4/-3
х=1,33333333333
3. -4+21+(3-x)=12
– 4 + 21 + 3 – x = 12
– x = 12 – 3 – 21 + 4
-x = -8
x = 8
4. -2(x-3)+(4-x)=12
– 2x + 6 + 4 – x = 12
– 2x – x = 12 – 4 – 6
-3x = 2
x = 2/-3
х=-0,66666666666
1. -12(2-x)=-6x+2
– 24 + 12x = – 6x + 2
12x + 6x = 2 + 24
18x = 26
9x = 13
x = 13/9
х=1,44444444444
2. -(x-3)+2(3-x)=5
– x + 3 + 6 – 2x = 5
– x – 2x = 5 – 6 – 3
-3x = -4
x = -4/-3
х=1,33333333333
3. -4+21+(3-x)=12
– 4 + 21 + 3 – x = 12
– x = 12 – 3 – 21 + 4
-x = -8
x = 8
4. -2(x-3)+(4-x)=12
– 2x + 6 + 4 – x = 12
– 2x – x = 12 – 4 – 6
-3x = 2
x = 2/-3
х=-0,66666666666