r-1=5-9

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Solution for r-1=5-9 equation: 


Simplifying
r + -1 = 5 + -9

Reorder the terms:
-1 + r = 5 + -9

Combine like terms: 5 + -9 = -4
-1 + r = -4

Solving
-1 + r = -4

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + r = -4 + 1

Combine like terms: -1 + 1 = 0
0 + r = -4 + 1
r = -4 + 1

Combine like terms: -4 + 1 = -3
r = -3

Simplifying
r = -3

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