Question

a- b=659   a;b=8rest 15 aflati nr

Answer 1

a-b=659
a:b=8rest 15
a=8b+15
8b+15-b=659
7b=659-15
b=644/7
b=92
a=659+b
a=659+92=751

Answer 2

a- b=659 a:b=8rest 15=>a=8*b+15 Inlocuim in prima ecuatie
8*b+15-b=659
b*(8-1)=659-15
b*7=644
b=$\frac{644}{7}$
b=92

a=92+659=751