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puteti sa ma ajutati 3(x+4)=3x+12

Răspuns :

3(x+4)=3x+12
3x+12=3x+12
3x-3x=12-12
0x=0
x=0
3(x+4)=3x+12
3+12=3(x+4)
x-8
3*12=3*8+12
36=24+12
36=36