Question

X + y = 26
2x + 3y = 13.
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Answer 1

Explicación paso a paso:

{x + y = 26

{2x + 3y = 13

{x = 26 - y

{2x + 3y = 13

2(26 - y) + 3y = 13

52 - y + 3y = 13

52 + y = 13

y = 13 - 52

y = -39

x = 26 - (-39)

x = 26 + 39

x = 65

(x, y) = (65, -39)