13-r=3

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Solution for 13-r=3 equation:


Simplifying
13 + -1r = 3

Solving
13 + -1r = 3

Solving for variable 'r'.

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

Add '-13' to each side of the equation.
13 + -13 + -1r = 3 + -13

Combine like terms: 13 + -13 = 0
0 + -1r = 3 + -13
-1r = 3 + -13

Combine like terms: 3 + -13 = -10
-1r = -10

Divide each side by '-1'.
r = 10

Simplifying
r = 10

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