Question

find x if x + Y is equals to 5 and x minus y is equals to 7

Answer 1

Given,

x + y = 5

x - y = 7

Now,

y = 5 - x

=)) x - ( 5- x ) = 7
=)) x - 5 + x = 7
=)) 2x = 5+ 7
=)) 2× = 12
=)) x = 6

Substitute x = 6 in first equation

6 + y = 5

y = 5 - 6

y = 1

Answer =)) x = 6, y = - 1

Answer 2

if x+ y = 5

and x- y = 7

so y = 5-x

atq

x- y = 7

and aftr putting value of y

we get

⬇️⬇️⬇️⬇️⬇️

x -(5-x) = 7

x -5+x = 7

2x = 12

x = 6

hope it helps you ☺