Klasa 6 . Oblicz:
a) 2(x+1)=4
b)4=2(x-1)
c)3(x-2)=x
d)3(2x+3)=x-1
e) 4(x-1)=3(x+1)
f)-(x-1)=2
j)x=1-3(x+1)
h)(x+1)-(1-x)=1
i) 1/2(x-1)=4
j)-1/4 (2+x)=3/4x
k)-2(x+1/2)-3(x+1/3)=0
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a) 2x+2=4
2x=4-2
2x=2//2
x=1
b) 4=2x-2
-2x=-2-4
-2x=-6//(-2)
x=3
c) 3x-6=x
3x-x=6
2x=6//2
x=3
d) 6x+9=x-1
6x-x=-1-9
5x=-10//5
x=-2
e) 4x-4=3x+3
4x-3x=3+4
x=7
f) -x+1=2
-x=2-1
-x=1//(-1)
x=-1
g) x=1-3x-3
x+3x=-2
4x=-2//4
x=-1/2
h) x+1-1+x=1
2x=1//2
x=1/2
i) 1/2x-1/2=4
1/2x=4+1/2
1/2x=4 i 1/2//*2
x=9
j)-1/2-1/4x=3/4x
-1/4x-3/4x=1/2
-x=1/2//(-1)
x=-1/2
k) -2x-1-3x-1=0
-5x=1+1
-5x=2//(-5)
x=-2/5