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51yminus49y 98yminus77yplus2xplus6x calculati prin factor comun 8ori56plus8ori44 calculati prin factor comun 7plus 14 plus 21 scoateti factorul comun va sau coroanaaa va roggg am testtttttttttttttttttttt

Răspuns :

51y-48y=3y

98y-77y+2x+6x=21y+8x=29xy

8•56+8•44=448+432=880

7+14+21=42