Question

for a pair of linear equations 13x +17y = 41 and 17x + 13y =19, what is the value of x+y?
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Answer 1

$13x + 17y = 41 \\ 17x + 13y = 19 \\ add \: both \: eq. \\ 30x + 30y = 60 \\ 30(x + y) = 60 \\ x + y = \frac{60}{30} \\ x + y = 20 \\ \\ here \: is \: the \: answer \: \\ hope \: helps \:$
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