8+r+2=-9

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Solution for 8+r+2=-9 equation: 


Simplifying
8 + r + 2 = -9

Reorder the terms:
8 + 2 + r = -9

Combine like terms: 8 + 2 = 10
10 + r = -9

Solving
10 + r = -9

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 + r = -9 + -10

Combine like terms: 10 + -10 = 0
0 + r = -9 + -10
r = -9 + -10

Combine like terms: -9 + -10 = -19
r = -19

Simplifying
r = -19

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