Răspuns :
a + b = 1285
a : b = 6 rest 4
a = 6 × b + 4
6 × b + 4 + b = 1285
7 × b + 4 = 1285
7 × b = 1285 - 4
7 × b = 1281
b = 1281 : 7
b = 183
a = 6 × 183 + 4
a = 1098 + 4
a = 1102
a : b = 6 rest 4
a = 6 × b + 4
6 × b + 4 + b = 1285
7 × b + 4 = 1285
7 × b = 1285 - 4
7 × b = 1281
b = 1281 : 7
b = 183
a = 6 × 183 + 4
a = 1098 + 4
a = 1102
a+b=1285
a:b=6,r(4)
a=?
b=?
a:b=6,r(4)=>a=6×b+4
=>a+b=6×b+4+b
=>6b+4+b=1285
=>7b=1285-4
=>7b=1281
=>b=183
=>a=6×183+4=1102
=>b=183