Question

afla termenul necunoscut si fa proba 487+a=625; z-387=705; 841-i=59

Answer 1

487+a=625/-487
a=138  Proba : 625-138=487

z-387=705/+387
z=1.092  Proba : 1.092-705=387

841-i=59
i=841-59
i=782         Proba : 59+782=841

Answer 2

487+a=625
a=625-487
a=138
P: 487+138=625
..........................................
z-387=705
z=705+387
z=1092
P: 1092-387=705
....................................
841-i=59
i=841-59
i=782
P: 841-782=59