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2x=21 /:2
x=10,5
6y= -52+13
6y= -39 /:6
y= 6,5
4x= 3+4
4x=7 /:4
x= 1,75
3c=-70 -2
3c=-72 / :3
c= -24
-4x-4x=-33
x= -33
-10x+2x=5
-8x=5 /:(-8)
x= - 0,625
7x-5x=21
2x=21/:2
x= 10,5
b)6y-13=-52
6y=-52+13
6y=-39 / :6
y=6,5
c)4x-4=3=
4x=3+4
4x=7 / :4
x= 1,76
d)3c+2=-70
3c=-70-2
3c=-72/:3
c=24
e)33-4x=4x
-4x-4x=-33
-8x=-33/:(-8)
x= 4,288
f)5-10x=-2x
-10x + 2x=-5
-8x=-5 / : (-8)
x=0,16
nie wiem czy dobrze
7x-5x=21
2x=21 /:2
x=10,5
b)6y-13=-52
6y=-52+13
6x=39 /:6
x=6,5
c)4x-4=3
4x=3+4
4x=7 /:4
x=1,75
d)3c+2=-70
3c=-70-2
3c=-72 /:3
c=24
e)33-4x=4x
-4x-4x=-33
x= -33
f)5-10x=-2x
-10x+2x=-5
-8x=-5 /:(-8)
x=0,625