Question

3x+2y=33.000.
5x+4y=57.000

Answer 1

3X + 2Y = 33000

5X + 4Y = 57000

3X = 33000 - 2Y

X =11000 - (2/3)Y

Reemplazo en  5X + 4Y = 57000

5[11000 - (2/3)Y] + 4Y = 57000

55000 - (10/3)Y + 4Y = 57000

(12/3)Y - (10/3)Y = 57000 - 55000

(2/3)Y = 2000

2Y = 2000(3)

2Y = 6000

Y = 3000

Ahora hallo X

X =11000 - (2/3)Y

X =11000 - (2/3)(3000)

X = 11000 - 2000

X = 9000

Rta: X = 9000, Y = 3000