Question

Va rog ajutati-ma nu stiu s-o fac pls

Answer 1

Explicație pas cu pas:

a+b=43

(b+1)-4=a× 3/5

[(b+1)-4]×5 =a

3

[(b+1)-4]×5 +b=43

3

(b-3)×5+3b=129

5b-15+3b=129

8b-15=129

8b=129+15

8b=144

b=144/8

b=18

a=43-b=43-18

a=25