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Rezolvati ecuatia:2(3x-5)-4x=11-x

Răspuns :

6x-10-4x=11-x
6x-4x+x=11+10
3x=21
x=21:3
x=7
6x-10-4x=11-x
6x-4x+x=11+10
3x=21
x=7