Pomóżcie wykonać działania :
a) 3x+x=
b) 3a+5a=
c) 8y-y=
d) 10a-4a=
e) 5x+(-7x)=
f) 2a-6a=
g) -3b-4b=
h) 3z+2z+7x=
i) 9y+6y-2y=
j) 5w-4w-2w=
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a) 3x+x=4x
b) 3a+5a=8a
c) 8y-y=7y
d) 10a-4a=6a
e) 5x+(-7x)=-2x
f) 2a-6a=-4a
g) -3b-4b=-7b
h) 3z+2z+7x=5z+7x
i) 9y+6y-2y=13y
j) 5w-4w-2w=-w
3x +x=4x ,3a+5a=8a, 8y-y=7y, 10a-4a=6a, 5x+(-7x)=-2x , 2a-6a= -4a, -3b-4b=-7b, 3z+2z=7x=5z+7x, 9y+6y-2y=15y-2y=13y, 5w-4w-2w=-1w