r-90=450

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Solution for r-90=450 equation: 


Simplifying
r + -90 = 450

Reorder the terms:
-90 + r = 450

Solving
-90 + r = 450

Solving for variable 'r'.

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

Add '90' to each side of the equation.
-90 + 90 + r = 450 + 90

Combine like terms: -90 + 90 = 0
0 + r = 450 + 90
r = 450 + 90

Combine like terms: 450 + 90 = 540
r = 540

Simplifying
r = 540

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