2(r+180)=450

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Solution for 2(r+180)=450 equation: 


Simplifying
2(r + 180) = 450

Reorder the terms:
2(180 + r) = 450
(180 * 2 + r * 2) = 450
(360 + 2r) = 450

Solving
360 + 2r = 450

Solving for variable 'r'.

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

Add '-360' to each side of the equation.
360 + -360 + 2r = 450 + -360

Combine like terms: 360 + -360 = 0
0 + 2r = 450 + -360
2r = 450 + -360

Combine like terms: 450 + -360 = 90
2r = 90

Divide each side by '2'.
r = 45

Simplifying
r = 45

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