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2x+2=4
x=1
b) 4 = 2(x-1)
4=2x-2
x=3
c) 3(x - 2 ) = x
3x-6=x
2x=6
x=3
d ) 3(2x + 3 ) = x - 1
6x+9=x-1
x=-2
e ) 4( x-1 ) = 3( x+1 )
4x-4=3x+3
x=7
f) - ( x - 1 ) = 2
-x+1=2
x=-1
g ) x = 1 - 3 ( x + 1 )
x=1-3x-3
4x=-2
x=-1/2
2x+2=4 |-2
2x=2 |:2
x=1
b)4=2(x-1)
4=2x-2 |+2
6=2x |:2
3=x
c)3(x-2)=x
3x-6=x |+6
3x=x+6 |-x
2x=6 |:2
x=3
d)3(2x+3)= x-1
6x+9= x-1|-x
5x+9=-1 |-9
5x=-10 |:5
x=-2
e)4(x-1)=3(x+1)
4x-4=3x+1 |+4
4x=3x+5 |-3x
x=5
f)-(x-1)=2
-x+1=2 |-1
-x=1 |*(-1)
x=-1
g)x=1-3(x+1)
x=1-3x-3 |+2
x+3=2-3x |+3x
4x+3=2 |-3
4x=-1 |:4
x=-0,25
2x=4-2
2x=2/2
x=1
b)
4=2x-2
4+2=2x
6=2x/2
x=3
c)
3x-6=x
-6=x-3x
-6=-2x/-2
x=3
d)
6x+9=x-1
6x-x=-9+1
7x=-8/:7
x=8/7 ułamek
e)
4x-4=3x+1
-4=3x+1-4x
-4-1=-x
-5=-x/-1
x=5
f)
-x+1=2
-x=2-1
-x=1/ -1
x=1
g)
x=1-3x-3
x+3x=1-3
4x=-2/4
x=2/4 ułamek