31=2r+19

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Solution for 31=2r+19 equation:


Simplifying
31 = 2r + 19

Reorder the terms:
31 = 19 + 2r

Solving
31 = 19 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
31 + -2r = 19 + 2r + -2r

Combine like terms: 2r + -2r = 0
31 + -2r = 19 + 0
31 + -2r = 19

Add '-31' to each side of the equation.
31 + -31 + -2r = 19 + -31

Combine like terms: 31 + -31 = 0
0 + -2r = 19 + -31
-2r = 19 + -31

Combine like terms: 19 + -31 = -12
-2r = -12

Divide each side by '-2'.
r = 6

Simplifying
r = 6

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