9.) Rozwiąż równania.
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b) 3x - 4 = 5x
d) -2x = 7x + 18
5x - 6 = 8x + 15 - 8x
x = -2
-3x - 6 = 15 + 6
-3x = 21 :(-3)
x = -7
a) 6x + 4 = 2x
c) -2x + 7 = 6x-9
e) - 4x + 5 = 25-9x​