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ajutatima sa rezolv ecuatia --- /// 51-2×(7x+2)=19

Răspuns :

51-2x(7x+2)=19
2x(7x+2)=51-19
2x(7x+2)=32
(7x+2)=32:2
7x+2=16
7x=16-2
7x=14
x=14:7
x=2