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-4x=11-3
-4x=8 / (-4)
x= -2
b) 5y -3 = -18
5y=-18+3
5y=-15 / 5
y= -3
c) 9 - 2x = 10
-2x= 10-9
-2x= 1 / (-2)
x= - 0,5
d) 6 + 2y = -5+ 3y
2y - 3y =-5 - 6
-y=-11 /(-1)
y= 11
Proszę ;) Na pewno jest dobrze :)