Question

The sum of the three numbers is 80. If we multiply the lst by 2 and add the 2nd number and substraet the 3rd we get 92. If we multiply the lst by 3 and add the 2nd and 3rd to it, we get 184. Find the numbers.

Answer 1

2x + y - z = 92
3x +  y + z = 184
x + y + z = 80
by solving these equations we get
x = 52
y = 8
z = 20

Answer 2

hey by using Cramer's rule I solve it