Question

5+12supra 9=a supra 19
Aflați pe " a"!

Answer 1

9
5+12/9 = a/19

45/9+12/9=a/19

57/9=a/19

A=(57x19)/9
A=120,3

Answer 2

5+4/3=a/19
95+76/3=a
a=95+25,(3)=120,(3)
sau a=361/3
verificare
5+4/3=361/(3*19)
19/3=19/3 adevarat
problema e bine rezolvata