Question

Resolver e indicar: 3x + 2y
5x + 7y = 17
2x + y = 5

Answer 1

Explicación paso a paso:

5x + 7y = 17(x2) 10x + 14y = 34

2x + y = 5(x-5) -10x - 5y = -25

9y = 9 => y = 1 x = 2

Indicamos el 3x + 2y

3(2) + 2(1) = 8

RPTA: 8