r-(r+5)=y

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Solution for r-(r+5)=y equation:


Simplifying
r + -1(r + 5) = y

Reorder the terms:
r + -1(5 + r) = y
r + (5 * -1 + r * -1) = y
r + (-5 + -1r) = y

Reorder the terms:
-5 + r + -1r = y

Combine like terms: r + -1r = 0
-5 + 0 = y
-5 = y

Solving
-5 = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-5 + -1y = y + -1y

Combine like terms: y + -1y = 0
-5 + -1y = 0

Add '5' to each side of the equation.
-5 + 5 + -1y = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1y = 0 + 5
-1y = 0 + 5

Combine like terms: 0 + 5 = 5
-1y = 5

Divide each side by '-1'.
y = -5

Simplifying
y = -5

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