Odpowiedź:
1. 3x - 6 = 12 + 6x
3x - 6x = 12 + 6
-3x = 18 | : (-3)
x = - 6
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2. 4x - 3 = 8x + 6
4x - 8x = 3 + 6
-4x = 9 | : (-4)
x = -2 i 1/4
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3. 6x + 1 = 23x +4
6x - 23x = -1 + 4
-17x = 3 | : (-17)
x = -3/17
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4. 1 + 20x = 25x + 20
20x - 25x = -1 + 20
-5x = 19 | : (-5)
x = -3 i 4/5
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5. 8x - 6 = 12x + 12
8x - 12x = 6 + 12
-4x = 18 | : (-4)
x = -4 i 2/4 = -4 i 1/2
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6. 4(x + 2) = 8x + 12
4x + 8 = 8x + 12
4x - 8x = -8 + 12
-4x = 4 | : (-4)
x = -1
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7. 3(2 + x) = 12
6 + 3x = 12
3x = -6 + 12
3x = 6 | : 3
x = 2
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8. 4(2x + 5) = 10x
8x + 20 = 10 x
8 x - 10x = -20
-2x = -20 | : (-2)
x = 10
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9. 6(x - 2) = 42
6x - 12 = 42
6x = 42 + 12
6x = 54 | : 6
x = 9
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10. -5(x + 2) = 25
-5x + -10 = 25
-5x = 25 + 10
-5x = 35 | : (-5)
x = -7
Szczegółowe wyjaśnienie:
