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Solving Simultaneous Linear Equation Using Cramer's Rule

If 12x + 13...

Question

If $12 x + 13 y = 29 a n d 13 x + 12 y = 21,$ find $x + y$ .

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Solution

The correct option is A $2$
$12 x + 13 y = 29 a n d 13 x + 12 y = 21,$
Add the two equations:
$25 x + 25 y = 50 x + y = 2$

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Similar questions

12 x + 13 y = 29

13 x + 12 y = 21

x + y

x + y

12 x + 13 y = 29

13 x + 12 y = 21

\frac{1}{2 x} + \frac{1}{3 y} = 2 \frac{1}{3 x} + \frac{1}{2 y} = \frac{13}{6}

y = e^{4 x} + 2 e^{- x}

y^{'''} - 13 y^{'} - 12 y + 7

12 x + 13 y = 62

13 x + 12 y = 63

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