12r+5r+3r-5=

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Solution for 12r+5r+3r-5= equation:


Simplifying
12r + 5r + 3r + -5 = 0

Reorder the terms:
-5 + 12r + 5r + 3r = 0

Combine like terms: 12r + 5r = 17r
-5 + 17r + 3r = 0

Combine like terms: 17r + 3r = 20r
-5 + 20r = 0

Solving
-5 + 20r = 0

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + 20r = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 20r = 0 + 5
20r = 0 + 5

Combine like terms: 0 + 5 = 5
20r = 5

Divide each side by '20'.
r = 0.25

Simplifying
r = 0.25

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