Rozwiąż rónania :
2x+6=8
3x+5=20
-5x+4=3x+2
4x-7=8x-2
5x+2=-4x+4
2(x+3)+4x-3
5(x-2)=3(x-7)
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2x=8-6
2x=2/:2
x=1
3x+5=20
3x=20-5/:3
x=5
-5x+4=3x+2
-5x-3x=2-4
-8x=-2 /:(-8)
x=1/4
4x-7=8x-2
4x-8x=-2+7
-4x=5 /:(-4)
x=-1,25
5x+2=4x+4
5x-4x=4-2
x=2
2(x+3)=4x-3
2x+6=4x-3
2x-4x=-3-6
-2x=-9 /:(-2)
x=4,5
5(x-2)=3(x-7)
5x-10=3x-21
5x-3x=-21+10
2x=-11 /:2
x=-5,5