jmaochoa123 jmaochoa123

07-12-2020
Mathematics

contestada

X + y = 9
X + 3y = 13

Respuesta :

mrsaini281 mrsaini281

07-12-2020

Answer: x = 7 and y = 2

X + y = 9 ----equation1

X + 3y = 13 ------equation2

- - -

-2y = -4

y = 2

put the y value back in equation 1

x + 2 = 9

x = 9 - 2

x = 7

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