Zad 4
a) 5x + 4= 10
5x = 10 - 4
5x = 6. | :5
x = 6/5
b) 3x - 5 = 9
3x = 9 + 5
3x = 14. | :3
x = 14/3 = 4 2/3
c) -2x + 3 = 7
-2x = 7 - 3
-2x = 4. | :(-2)
x = -2
d) -4x - 3 = 13
-4x = 13 + 3
-4x = 16. | :(-4)
x = -4
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Zad 4
a) 5x + 4= 10
5x = 10 - 4
5x = 6. | :5
x = 6/5
b) 3x - 5 = 9
3x = 9 + 5
3x = 14. | :3
x = 14/3 = 4 2/3
c) -2x + 3 = 7
-2x = 7 - 3
-2x = 4. | :(-2)
x = -2
d) -4x - 3 = 13
-4x = 13 + 3
-4x = 16. | :(-4)
x = -4