-6+(3+8r)=15

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Solution for -6+(3+8r)=15 equation: 


Simplifying
-6 + (3 + 8r) = 15

Remove parenthesis around (3 + 8r)
-6 + 3 + 8r = 15

Combine like terms: -6 + 3 = -3
-3 + 8r = 15

Solving
-3 + 8r = 15

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 8r = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 8r = 15 + 3
8r = 15 + 3

Combine like terms: 15 + 3 = 18
8r = 18

Divide each side by '8'.
r = 2.25

Simplifying
r = 2.25

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