Răspunsuri

2014-07-27T19:14:54+03:00
A+i= 11

a-7= 5/6 * i

a-7= 5i/6  aducem la acelasi numitor

6a-42=5i

6a=5i+42

a=(5i+42)/6

(5i+42)/6 +i =11  aducem la acelasi numitor

5i+42 +6i =66

11i= 66-42

11i= 24

i= 2, 18 lei are Ionut

a=(5*2,18+42)/6=  (10,90 +42)/6=  52,90/6=  8,81 lei are Ana