Question

x+y=15 si y+z=23
a)n=x+2y+z
ajutor dau coaroana​

Answer 1

daca x+y=15 si y+z=23 =>
x+y+y+z=15+23
x+2y+z=38
Coroana?

Answer 2

x+y=15       y+z=23

PUTEM FACE:  adunam operatiile

(x+y)+(y+z)=15+23

x+2y+z=38(n)

Raspuns=38