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2x-2=7-x
2x+x=7+2
3x=9
x=3
c]
10=4-2x
2x=4-10
2x=-6
x=-3
d]
-(2x-1)=4
-2x+1=4
-2x=4-1
-2x=3
x=-1,5
e]
2(x+1)=x
2x+2=x
2x-x=-2
x=-2
2x-2=7-x
2x+x=7+2
3x=9/3
x=3
c]
10=4-2x
2x=4-10
2x=-6/2
x=-3
d]
-(2x-1)=4
-2x+1=4
-2x=4-1
-2x=3/(-2)
x=-1,5
e]
2(x+1)=x
2x+2=x
2x-x=-2
x=-2
2x+x=7+2
3x=9/3
x=3
c) 10=4-2x
2x=4-10
2x=-6/2
x= -3
d_ nie wiem
e) 2(x+1)=x
2x+2=x
2x-x=-2
x=-2