Question

{y=2x+1
{2y=x+8
eso es una ecuación de 2x2

Answer 1

y = 2x + 1

2y = x + 8

2 (2x + 1) = x + 8

4x + 2 = x + 8

4x - x = 8 - 2

3x = 6

x = 6 / 3

x = 2

y = 2 (2) + 1

y = 4 + 1

y = 5

COMPROBACIÓN:

5 = 2 (2) + 1

5 = 4 + 1

5 = 5

2 (5) = 2 + 8

10 = 10