Question

Resolver, aplicando el método de reducción en: 8x + 3y = 7
4x + y = 3 ​

Answer 1

8x + 3y = 7

4x + y = 3 (× -3)

8x + 3y = 7

-12x -3y = -9

-4x = -2

x = -2 /-4

x = 0.5

Reemplazar "x"

8x + 3y = 7

8(0.5) + 3y = 7

4 + 3y = 7

3y = 7 - 4

3y = 3

y = 1

Verificación:

8x + 3y = 7

8(0.5) + 3(1) = 7

4 + 3 = 7

4x + y = 3

4(0.5) + 1 = 3

2 + 1 = 3

Espero te ayude :)