-48=-9-13r

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Solution for -48=-9-13r equation: 


Simplifying
-48 = -9 + -13r

Solving
-48 = -9 + -13r

Solving for variable 'r'.

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

Add '13r' to each side of the equation.
-48 + 13r = -9 + -13r + 13r

Combine like terms: -13r + 13r = 0
-48 + 13r = -9 + 0
-48 + 13r = -9

Add '48' to each side of the equation.
-48 + 48 + 13r = -9 + 48

Combine like terms: -48 + 48 = 0
0 + 13r = -9 + 48
13r = -9 + 48

Combine like terms: -9 + 48 = 39
13r = 39

Divide each side by '13'.
r = 3

Simplifying
r = 3

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