Question

If
$3x + 5y = 9$
and
$5x + 3y = 7$
then find the value of
$x + y$
​

Answer 1

Answer:

$3x + 5y = 9 \\ \\ 5x + 3y = 7$

multiplying equation 1 with 5

and equation 2 with 3

therefore

$15x + 25y = 45$

$15x + 9y = 21$

subtracting both equation

then we get

$16y = 24 \\ y = \frac{3}{2}$

therefore

$x = \frac{1}{2}$

x+y=2

hope it helps

Answer 2

y=3/2 and x= 1/2

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