Rozwiąż równania.
a) 10x + 4 = 7
b) 4x – 3 = 9​


Odpowiedź :

a) 10x + 4 = 7

10x = 7 - 4

10x = 3

x = 3/10

b) 4x - 3 = 9

4x = 9 + 3

4x = 12

x = 3

a) 10x + 4 = 7
10x = 7 - 4
10x = 3 |: 10
x = 0,3

b) 4x - 3 = 9
4x = 9 + 3
4x = 11 |: 4
x = 2,75