Question

if x+y=7 andx=-1,fine y

Answer 1

Heya user,
Here is your answer !!

Given, x = -1.

Now , x + y = 7
=> y = 7 - x
=> y = 7 - (-1) .... [substituting value of x ]
=> y = 7 + 1
=> y = 8 ..... [ANS]

HOPE IT HELPS !!
Have a great day !!

Answer 2

x+y=7

y=7-x

put x=-1 in the above equation

y=7-(-1)= 7+1=8

therefore, y=8