20+(2+r)=0

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Solution for 20+(2+r)=0 equation: 


Simplifying
20 + (2 + r) = 0

Remove parenthesis around (2 + r)
20 + 2 + r = 0

Combine like terms: 20 + 2 = 22
22 + r = 0

Solving
22 + r = 0

Solving for variable 'r'.

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

Add '-22' to each side of the equation.
22 + -22 + r = 0 + -22

Combine like terms: 22 + -22 = 0
0 + r = 0 + -22
r = 0 + -22

Combine like terms: 0 + -22 = -22
r = -22

Simplifying
r = -22

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