Question

2x+y=5, 3x-y=5 solve by substitution method​

Answer 1

$2x + y = 3x - y$

then

$y + y = 3x - 2x \\ 2y = x$

or

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

Answer 2

2x+y=5
y=5-2x

putting thus value in equation

3x-y=5

3x-5+2x=5

5x=10

x=2

putting x =2 in equation

y=5-2x

y=5-2(2)
y=5-4
y=1