Question

a-b=139 impartind nr mai mare la dublul nr mai mic obtinem catul 10 si r 6

Answer 1

a-b=139
a:2b=10r6=>a=20b+6
20b+6-b=139
19b=139-6
b=133:19
b=7
a=20x7+6=146

Answer 2

a-b=139; a:2b=10 rest 6=>a=20b+6; 20b+6-b=139; 19b+6=139; 19b=133; b=7; a=146