Question

Află numărul necunoscut,folosind metodele indicate.
a) a+3765=5467
a-5216=1075
2346+a=4576

b) 7802-a=4568
a+1079=3456
a-1549=3456

c) 3459+a=8527
2457-a=1234
a+2504=7923​

Answer 1

A) a+3765=5467
a=5467-3765
a=1702
Verificare: 1702+3765=5467
a-5216=1075
a=5216+1075
a=6291
Verificare:6291-5216=1075
2346+a=4576
a=4576-2346
a=2230
Verificare:2346+2230=4576
B) 7802-a=4568
a=7802-4568
a=3237
Verificare: 7802-3237=4568
a+1079=3456
a=3456-1079
a=2377
Verificare: 2377+1079=3456
a-1549=3456
a=3456+1549
a=5005
Verificare: 5005-1549=3456
C)3459+a=8527
a=8527-3459
a=5068
Verificare:3459+5068=8527
2457-a=1234
a=2457-1234
a=1223
Verificare: 2457-1223=1234
a+2504=7923
a=7923-2504
a=5419
Verificare:5419+2504=7923