a) 6x-7(11+2x)+2 = -4(15-x) +3x
6x- 77 -14x +2 = -60 +4x +3x
6x -14x -4x -3x = -60 +77 -2
-15x = 15/:(-15)
x = -1
b) 3(5x+3)= 7(x+5) -3(2-x)
15x +9 = 7x +35 -6 +3x
15x -7x -3x = 35 -6 -9
5x = 20/:5
x = 4
c) 2(x-1) +4(x-3)= -3(x-2) +9x
2x -2 +4x -12 = -3x +6 +9x
2x +4x +3x -9x = 6 +2 +12
0 = 20
d) 5x -3(6-8x) = x-7(x+4)
5x -18 +24x = x -7x -28
5x +24x -x +7x = -28 +18
35x = -10 /35
x = -10/35
e) 2x+8(2x-3)-6(x-3)= 5(3x+1) +2x -11
2x +16x -24 -6x +18 = 15x +5 +2x -11
2x +16x -6x -15x -2x = 5 -11 +24 -18
- 5x = 0 /(-5)
x = 0
f) 3(2x+3) -5(x-2) -4(x+7) = 3
6x +9 -5x +10 -4x -28 =3
6x -5x -4x = 3 -9 -10 +28
- 3x = 12 /:(-3)
x = -4
g) 6(3,5 - 1,2x) = 5( -3,5x +1,2) + 0,3x
21 -7,2x = -17,5x +6 + 0,3x
- 7,2x +17,5x -0,3x = 6 -21
10x = - 15/:10
x = - 1,5
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a) 6x-7(11+2x)+2 = -4(15-x) +3x
6x- 77 -14x +2 = -60 +4x +3x
6x -14x -4x -3x = -60 +77 -2
-15x = 15/:(-15)
x = -1
b) 3(5x+3)= 7(x+5) -3(2-x)
15x +9 = 7x +35 -6 +3x
15x -7x -3x = 35 -6 -9
5x = 20/:5
x = 4
c) 2(x-1) +4(x-3)= -3(x-2) +9x
2x -2 +4x -12 = -3x +6 +9x
2x +4x +3x -9x = 6 +2 +12
0 = 20
d) 5x -3(6-8x) = x-7(x+4)
5x -18 +24x = x -7x -28
5x +24x -x +7x = -28 +18
35x = -10 /35
x = -10/35
e) 2x+8(2x-3)-6(x-3)= 5(3x+1) +2x -11
2x +16x -24 -6x +18 = 15x +5 +2x -11
2x +16x -6x -15x -2x = 5 -11 +24 -18
- 5x = 0 /(-5)
x = 0
f) 3(2x+3) -5(x-2) -4(x+7) = 3
6x +9 -5x +10 -4x -28 =3
6x -5x -4x = 3 -9 -10 +28
- 3x = 12 /:(-3)
x = -4
g) 6(3,5 - 1,2x) = 5( -3,5x +1,2) + 0,3x
21 -7,2x = -17,5x +6 + 0,3x
- 7,2x +17,5x -0,3x = 6 -21
10x = - 15/:10
x = - 1,5