-4+r=12

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Solution for -4+r=12 equation: 


Simplifying
-4 + r = 12

Solving
-4 + r = 12

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + r = 12 + 4

Combine like terms: -4 + 4 = 0
0 + r = 12 + 4
r = 12 + 4

Combine like terms: 12 + 4 = 16
r = 16

Simplifying
r = 16

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