rozwiąż równania
a)-2(x+1)=4
b)8=2(x-1)
c)(3x+1)=x-1
d)5(x-1)=2(x+1)
-2x-2=4
-2x=2+4
-2x=6 | : (-2)
x=-3
8=2x-2
-2x=-2-8
-2x=-10 | :(-2)
x=5
3x-x=-1-1
2x=-2 |:2
x=-1
5x-5=2x+2
5x-2x=5+2
3x=7 |:3
x≈2,3
a) -2(x+1)=4
-2x=4+2
-2x=6 / -2
x= -3
8+2=2x
2x=10 / 2
c)c)(3x+1)=x-1
2x=-2 / 2
5x-2x=2+5
3x=7 / 3
x=3,5
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a)-2(x+1)=4
-2x-2=4
-2x=2+4
-2x=6 | : (-2)
x=-3
b)8=2(x-1)
8=2x-2
-2x=-2-8
-2x=-10 | :(-2)
x=5
c)(3x+1)=x-1
3x-x=-1-1
2x=-2 |:2
x=-1
d)5(x-1)=2(x+1)
5x-5=2x+2
5x-2x=5+2
3x=7 |:3
x≈2,3
a) -2(x+1)=4
-2x-2=4
-2x=4+2
-2x=6 / -2
x= -3
b)8=2(x-1)
8=2x-2
8+2=2x
2x=10 / 2
x=5
c)c)(3x+1)=x-1
3x-x=-1-1
2x=-2 / 2
x=-1
d)5(x-1)=2(x+1)
5x-5=2x+2
5x-2x=2+5
3x=7 / 3
x=3,5