Question

If x + y = 10 and x – y = 12 then​

Answer 1

Step-by-step explanation:

$= > x + y = 10 \\ = > x - y = 12 \\ ........................ \\ = > 2y = - 2 \\ = > y = - 1 \\ \\ = > x = y + 12 \\ = > x = - 1 + 12 \\ = > x = 11$

Answer 2

Answer:

x+y=10

x=10-y

x-y=12

10-y-y=12

-2y=2

y= 2/-2= -1

x=10-y=10+1=11