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Odpowiedź:
a) 5x = 130 |:5
x = 26
b) 4x + 12 = 36
4x = 36 - 12
4x = 24 |:4
x = 6
c) 7x - 22 = 27
7x = 27 + 22
7x = 49 |:7
x = 7
d) 3x - 8 - x = 9 - 2x - 3
3x - x + 2x = 9 - 3 + 8
4x = 14 |:4
x = 3,5
Odpowiedź:
x = 130 : 5
x = 26
x = 36 - 12
x = 24/: 4
x = 6
x = 27 + 22
x = 49/: 7
x = 7
2x - 8 = 6 - 2x = 2x + 2x =6 + 8 = 4x =6 + 8 = 4x = 14
14 : 4
x = 7/2 = 3 1/2 = 3,5