6=12-r

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Solution for 6=12-r equation: 


Simplifying
6 = 12 + -1r

Solving
6 = 12 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
6 + r = 12 + -1r + r

Combine like terms: -1r + r = 0
6 + r = 12 + 0
6 + r = 12

Add '-6' to each side of the equation.
6 + -6 + r = 12 + -6

Combine like terms: 6 + -6 = 0
0 + r = 12 + -6
r = 12 + -6

Combine like terms: 12 + -6 = 6
r = 6

Simplifying
r = 6

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