Question

if ,n + 2y=10;x-y =20 find xand y​

Answer 1

Answer:

n+2y=10;x-y=20

=x=25,y=5

Answer 2

Answer:

$x - y = 20$

$x = 2 0+ y \: \: \: - (equation1)$

$x + 2y = 10 \: \: \: (given) - (equation2)$

substituting value of x in equation 2 we get,

20+y+2y=10

20 + 3y =10

3y =20-10

3y =10

y=10/3

x+2y=10

x+2×10/3=10

3x+20 =30

3x=10

x=3/10