Question

if 3x+y=5 and X+3y=7, then X+y=​

Answer 1

Answer:

x=1, y=2

Step-by-step explanation:

3x+y=5 1

x+3y=7 2

multiply equation 1 by 3

9x+3y=15

x+3y=7

- - -

=8x=8

so x = 1 put in 1

3×1 +y = 5

3+y=5

y = 2

so x+y = 1+2 = 3

Answer 2

Answer:

i hope it helps u..............