Question

a-b=100 ;(a:2):(b:2) = 2 rest 5

Answer 1

a-b=100
(a:2):(b:2)=2+rest5
(a:2):(b;2)=a/2:b/2=a/2*2/b=a/b
a:b=2+r5     a=2b+5
2b+5-b=100
b=100-5
b=95
a=2b+5=2*95+5=190+5=095
a=195