13=12t-5-3r

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Solution for 13=12t-5-3r equation:


Simplifying
13 = 12t + -5 + -3r

Reorder the terms:
13 = -5 + -3r + 12t

Solving
13 = -5 + -3r + 12t

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
13 + 3r = -5 + -3r + 3r + 12t

Combine like terms: -3r + 3r = 0
13 + 3r = -5 + 0 + 12t
13 + 3r = -5 + 12t

Add '-13' to each side of the equation.
13 + -13 + 3r = -5 + -13 + 12t

Combine like terms: 13 + -13 = 0
0 + 3r = -5 + -13 + 12t
3r = -5 + -13 + 12t

Combine like terms: -5 + -13 = -18
3r = -18 + 12t

Divide each side by '3'.
r = -6 + 4t

Simplifying
r = -6 + 4t

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