(r-4)-9=3

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Solution for (r-4)-9=3 equation:


Simplifying
(r + -4) + -9 = 3

Reorder the terms:
(-4 + r) + -9 = 3

Remove parenthesis around (-4 + r)
-4 + r + -9 = 3

Reorder the terms:
-4 + -9 + r = 3

Combine like terms: -4 + -9 = -13
-13 + r = 3

Solving
-13 + r = 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 + r = 3 + 13

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

Combine like terms: 3 + 13 = 16
r = 16

Simplifying
r = 16

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