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-1x=9 I /-1
x= -9
tu masz 1 przyklad restzy nie umiem a i mam nadzieje ze pomogłam.....
2x - 6 = 3x + 3
2x - 3x = 6 + 3
-x = 9 / : (-1)
x = -9
⅓(y- 1) = 5y
⅓y - ⅓ = 5y
⅓y - 5y = ⅓
-4⅔y = ⅓ /: (-4⅔)
y = 1/14
6z + 8
------- = 4 / razy 2
6z + 8 = 8
6z = 8 - 8
6z = 0 /: 6
z = 0
2