Question

if x+y= 12 and x-y =4 what is the value of y ?

Answer 1

hi mate here is your answer

Answer 2

$here \: is \: your \: answer$
$x + y = 12........(1)$
$x - y = 4..........(2)$
$from \: equation(1) \: \:$
$x = 12 - y$
$inserting \: x \: from \: (1)in(2)$
$12 - y - y = 4 \\ - 2y = - 8 \\ y = 4$
$x + 4 = 12 \\ x = 8$
$mark \: as \: brainliest$