-r+4=5

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Solution for -r+4=5 equation: 


Simplifying
-1r + 4 = 5

Reorder the terms:
4 + -1r = 5

Solving
4 + -1r = 5

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + -1r = 5 + -4

Combine like terms: 4 + -4 = 0
0 + -1r = 5 + -4
-1r = 5 + -4

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

Divide each side by '-1'.
r = -1

Simplifying
r = -1

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