Question

X-y=11 if x=4 wat is y

Answer 1

Let's see this original ewuation:
$x-y=11$
1) Substitute 4 in for x: $4-y=11$
2)Subtract 4 from both sides. This cancels out four. $(4-4)-y=11-4$
3)Cancel: $-y=7$
4)Multiply both sides by negative 1:$-1*-y=11*-1 \\ y=-11$

$y=-11$