2-5r+1=13

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Solution for 2-5r+1=13 equation: 


Simplifying
2 + -5r + 1 = 13

Reorder the terms:
2 + 1 + -5r = 13

Combine like terms: 2 + 1 = 3
3 + -5r = 13

Solving
3 + -5r = 13

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + -5r = 13 + -3

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

Combine like terms: 13 + -3 = 10
-5r = 10

Divide each side by '-5'.
r = -2

Simplifying
r = -2

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