zapisz w prostszej postaci Pliss na dzis
a)3x+4x+5y-2y=
b)2a+b-4b=
c)3x-y+4x-2y=
d)-2a+2b-3a-3b=
3x+4x+5y-2y=7x+3y
2a+b-4b=2a-3b
3x-y+4x-2y=7x-3y
-2a+2b-3a-3b=-5a-b
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3x+4x+5y-2y=7x+3y
2a+b-4b=2a-3b
3x-y+4x-2y=7x-3y
-2a+2b-3a-3b=-5a-b