19-2r=13

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Solution for 19-2r=13 equation: 


Simplifying
19 + -2r = 13

Solving
19 + -2r = 13

Solving for variable 'r'.

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

Add '-19' to each side of the equation.
19 + -19 + -2r = 13 + -19

Combine like terms: 19 + -19 = 0
0 + -2r = 13 + -19
-2r = 13 + -19

Combine like terms: 13 + -19 = -6
-2r = -6

Divide each side by '-2'.
r = 3

Simplifying
r = 3

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