I. 3x + 8 = 2x -5
3x -2x = - 5 - 8
1x = -13 / : 1
x= -13
II. 2(3x + 5) = 5(x – 4)
6x + 10 = 5x - 20
6x - 5x = - 20 - 30
1x = -50 / : 1
x = -50
III. 6(2x- 1) + 4(x+3)=22
12x - 6 + 4x + 12 = 22
16x = 22 + 6 - 12
16x = 28 - 12
16x = 16 / : 16
x = 1
IV. 6 – 4(x-3) = 22
6 - 4x - 12 = 22
-4x = 22 - 6 + 12
-4x = 16 + 12
-4x = 28 / : (-4)
x = -7
V. 15x + 3(1-2x) = 9x
15x + 3 - 6x = 9x
9x - 9x = - 3
0 = - 3
Równanie sprzeczne (brak rozwiązania)
VI. 2(x+2) = 4 (0,5x-8)
2x + 4 = 2x - 32
2x - 2x = -32 - 4
0 = -36
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I. 3x + 8 = 2x -5
3x -2x = - 5 - 8
1x = -13 / : 1
x= -13
II. 2(3x + 5) = 5(x – 4)
6x + 10 = 5x - 20
6x - 5x = - 20 - 30
1x = -50 / : 1
x = -50
III. 6(2x- 1) + 4(x+3)=22
12x - 6 + 4x + 12 = 22
16x = 22 + 6 - 12
16x = 28 - 12
16x = 16 / : 16
x = 1
IV. 6 – 4(x-3) = 22
6 - 4x - 12 = 22
-4x = 22 - 6 + 12
-4x = 16 + 12
-4x = 28 / : (-4)
x = -7
V. 15x + 3(1-2x) = 9x
15x + 3 - 6x = 9x
9x - 9x = - 3
0 = - 3
Równanie sprzeczne (brak rozwiązania)
VI. 2(x+2) = 4 (0,5x-8)
2x + 4 = 2x - 32
2x - 2x = -32 - 4
0 = -36
Równanie sprzeczne (brak rozwiązania)