-13=r+-18

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Solution for -13=r+-18 equation:


Simplifying
-13 = r + -18

Reorder the terms:
-13 = -18 + r

Solving
-13 = -18 + 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 = -18 + r + -1r

Combine like terms: r + -1r = 0
-13 + -1r = -18 + 0
-13 + -1r = -18

Add '13' to each side of the equation.
-13 + 13 + -1r = -18 + 13

Combine like terms: -13 + 13 = 0
0 + -1r = -18 + 13
-1r = -18 + 13

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

Divide each side by '-1'.
r = 5

Simplifying
r = 5

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