10+2r=0

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Solution for 10+2r=0 equation: 


Simplifying
10 + 2r = 0

Solving
10 + 2r = 0

Solving for variable 'r'.

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

Add '-10' to each side of the equation.
10 + -10 + 2r = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 2r = 0 + -10
2r = 0 + -10

Combine like terms: 0 + -10 = -10
2r = -10

Divide each side by '2'.
r = -5

Simplifying
r = -5

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