Question

Ajutati-ma rapid dau coroana

a:b=3 rest 5 si a-b=2

a:b=8 rest 3 si a+b=9

Answer 1

a:b=3:rest 5 ⇒a=3xb+5

 a-b=2 

3xb+5-b=2

2xb=2-5

b=-3/2

a=3x(-3/2)+5=-9/2+5=-9/2+10/2=1/2

a:b=8 rest 3⇒a=8xb+3

 a+b=9

8xb+3+b=9

9b=9-3

9b=6

b=6/9=2/3

a=8x2/3+3=16/3+9/3=25/3=8 intregi 1/3