13=54-r

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Solution for 13=54-r equation:


Simplifying
13 = 54 + -1r

Solving
13 = 54 + -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.
13 + r = 54 + -1r + r

Combine like terms: -1r + r = 0
13 + r = 54 + 0
13 + r = 54

Add '-13' to each side of the equation.
13 + -13 + r = 54 + -13

Combine like terms: 13 + -13 = 0
0 + r = 54 + -13
r = 54 + -13

Combine like terms: 54 + -13 = 41
r = 41

Simplifying
r = 41

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