Question

X + y = 7, for x ....

Answer 1

Hey there!☺

$Answer:\boxed{x=-y+7}$

$Explanation:$

$x+y=7$

The first/last step we have is to add -y to both sides.

$x+y+-y=7+-y\\x=-y+7$

$x=-y+7$ is your answer.

Hope this helps!☺

Answer 2

Answer:

x = -y + 7

    or

x = 7 - y

Step-by-step explanation:

x + y = 7

Step 1: Subtract y from both sides to get x alone.

x + y = 7

   -y    -y

x = 7 - y

Since x is alone and y is a variable & not a number, there's nothing else to do to the equation.