Odpowiedź:
3(x - 5) = 9
3x - 15 = 9
3x = 9 + 15
3x = 24. /:3
x = 8
4(x + 1) = - 8
4x + 4 = - 8
4x = - 8 - 4
4x = - 12 /:4
x = - 3
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Odpowiedź:
3(x - 5) = 9
3x - 15 = 9
3x = 9 + 15
3x = 24. /:3
x = 8
4(x + 1) = - 8
4x + 4 = - 8
4x = - 8 - 4
4x = - 12 /:4
x = - 3