Question

cum pot rezolva ex. : a+b=30 ;a:b=6rest2 / a,b=?

Answer 1

a + b = 30
a / b = 6 rest 2  =>  a = 6 * b + 2
a  __/__/__/__/__/__/+2_/
b  __/
30 - 2 = 28
28 / 7 = 4
b = 4
a = 6 * 4 + 2 
a = 26

Answer 2

a= 6xb + 2 6b+2+b=30 7b+2=30 7b=28 b=28:7 b=4 a+4=30 a=30-4 a=26