13=r-5

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Solution for 13=r-5 equation:


Simplifying
13 = r + -5

Reorder the terms:
13 = -5 + r

Solving
13 = -5 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
13 + -1r = -5 + r + -1r

Combine like terms: r + -1r = 0
13 + -1r = -5 + 0
13 + -1r = -5

Add '-13' to each side of the equation.
13 + -13 + -1r = -5 + -13

Combine like terms: 13 + -13 = 0
0 + -1r = -5 + -13
-1r = -5 + -13

Combine like terms: -5 + -13 = -18
-1r = -18

Divide each side by '-1'.
r = 18

Simplifying
r = 18

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