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Rozwiąż równania.
b) -6x + 8 = 4
c) 5x - 14 = 6
d) 9 - x = 24
e) 5 + 4x = 29
f) 1/5x - 2 = 4


Odpowiedź :

-6x + 8 = 4

-6x = 4 - 8

-6x = -4 | : (-6)

x = ⅔

5x - 14 = 6

5x = 6 + 14

5x = 20 | : 5

x = 4

9 - x = 24

-x = 24 - 9

-x = 15 | : (-1)

x = -15

5 + 4x = 29

4x = 29 - 5

4x = 24 | : 4

x = 6

⅕x - 2 = 4

⅕x = 4 + 2

⅕x = 6 | * 5

x = 30

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