Question

Cine mă ajuta?Va rog!!

Answer 1

a+b=4,53
a-b=1,83
2a=4,53+1,83
2a=6,36
a=6,36:2
a=3,18
3,18+b=4,53
b=4,53-3,18
b=1,35

Answer 2

Salut,

x+y = 4,53
x-y = 1,83 → x = 1,83+y.

x+y = 4,53
1,83+y+y = 4,53
2y = 4,53-1,83
2y = 2,7
y = 2,7/2
y = 1,35.

x = 1,83+y
x = 1,83+1,35
x = 3,18.


Verificare : x+y = 3,18+1,35 = 4,53.
x-y = 3,18-1,53 = 1,83.



Succes! :3