Question

Afla impartitorul fiecarei operatii.
647:x=3 rest2
978:x=7 rest5

Answer 1

647:X= 3 rest 2
647 = 3×X+2
3×X = 647-2
3×X = 645 |:3
X = 215

Verificare:
647:215 = 3 rest 2

978:X = 7 rest 5
978 = 7×X+5
7×X = 978-5
7×X = 973 |:7
X = 139

Verificare:
978:139 = 7 rest 5