Odpowiedź:
1)
3x - 5 = 6(x - 1) - 2
3x - 5 = 6x - 6 - 2
3x - 6x = -8 + 5
-3x = -3 /:(-3)
x = 1
2)
5(3 - x) = 7x - 1
15 - 5x = 7x - 1
-5x - 7x = -1 - 15
-12x = -16 /:(-12)
x = 16/12 = 1 4/12 = 1 1/3
3)
4(x - 1) = 5 + x
4x - 4 = 5 + x
4x - x = 5 + 4
3x = 9 /:3
x = 3
4)
2(x + 3) = 3x + 2
2x + 6 = 3x + 2
2x - 3x = 2 - 6
-x = -4 /*(-1)
x = 4
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Odpowiedź:
1)
3x - 5 = 6(x - 1) - 2
3x - 5 = 6x - 6 - 2
3x - 6x = -8 + 5
-3x = -3 /:(-3)
x = 1
2)
5(3 - x) = 7x - 1
15 - 5x = 7x - 1
-5x - 7x = -1 - 15
-12x = -16 /:(-12)
x = 16/12 = 1 4/12 = 1 1/3
3)
4(x - 1) = 5 + x
4x - 4 = 5 + x
4x - x = 5 + 4
3x = 9 /:3
x = 3
4)
2(x + 3) = 3x + 2
2x + 6 = 3x + 2
2x - 3x = 2 - 6
-x = -4 /*(-1)
x = 4
Szczegółowe wyjaśnienie: