- 4 - (x+y) =?

Answers:
Simplifying
-4 + -1(x + y) = 0
-4 + (x * -1 + y * -1) = 0
-4 + (-1x + -1y) = 0

Solving
-4 + -1x + -1y = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + -1x + 4 + -1y = 0 + 4

Reorder the terms:
-4 + 4 + -1x + -1y = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -1x + -1y = 0 + 4
-1x + -1y = 0 + 4

Combine like terms: 0 + 4 = 4
-1x + -1y = 4

Add 'y' to each side of the equation.
-1x + -1y + y = 4 + y

Combine like terms: -1y + y = 0
-1x + 0 = 4 + y
-1x = 4 + y

Divide each side by '-1'.
x = -4 + -1y

Simplifying
x = -4 + -1y

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-4-(x+y)=0
-4(-x+y)=0
4x-4y=0
-4y=4x
y=-1x
OR
y=-x
Hope this helps!

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