-3=-18+r

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Solution for -3=-18+r equation:


Simplifying
-3 = -18 + r

Solving
-3 = -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.
-3 + -1r = -18 + r + -1r

Combine like terms: r + -1r = 0
-3 + -1r = -18 + 0
-3 + -1r = -18

Add '3' to each side of the equation.
-3 + 3 + -1r = -18 + 3

Combine like terms: -3 + 3 = 0
0 + -1r = -18 + 3
-1r = -18 + 3

Combine like terms: -18 + 3 = -15
-1r = -15

Divide each side by '-1'.
r = 15

Simplifying
r = 15

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