Question

Stiind ca ax+ay-9=81 si x+y=-3.Determinati a + 5
Ajutorr ms

Answer 1

ax + ay - 9 = 81
a(x + y) = 90
x + y = - 3
a * (- 3) = 90
a = 90 : (- 3)
a = - 30
a + 5 = - 30 + 5 = - 25

Answer 2

ax+ay-9=81
x+y=-3
a+5=?
a(x+y)-9=81
a*-3=90
a=90/-3=-30
a+5=-30+5=-25

Coroana te rog !