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2x+6=18
|2x-3|=5
3(2×+1)-3×=0



Răspuns :

Răspuns:

2x=18-6

2×=12

x=12÷2x=6

3•2x+1•3-3x=0
6x+3-3x=0
3x+3=0
3x=3
x=1