Odpowiedź:
1. 2·x-3+x=9
3x - 3 = 9 / +3
3x = 12 / :3
x = 4
2. 3·x-5-x=11
2x - 5 = 11 / +5
2x = 16 / :2
x = 8
3. 9·x=3·x+12 / -3x
6x = 12 / :6
x = 2
4. 10·x=4 · (- 6)
10x = -24 / : 10
x = (-2,4)
5. 9·x-7=3·x+5 / - 3x
6x - 7 = 5 /+6
6x = 11 / :6
x = 11/6
x = 1 5/6
6. 3-10·x=9-4·x / +10x
3 = 9 + 6x / -9
6x = (-6) / :6
x = (-1)
7. 4+5·x-2=7·x-7 / -5x
2 = 2x - 7 / +7
2x = 9 / :2
x = 4,5
8. -8+7·x+3=5·x+4+4·x+5 / -7x
(- 5) = 2x + 9 / -9
2x = (-14) / :2
x = (-7)
Szczegółowe wyjaśnienie:
Liczę na naj :))
