2r-4=0

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Solution for 2r-4=0 equation: 


Simplifying
2r + -4 = 0

Reorder the terms:
-4 + 2r = 0

Solving
-4 + 2r = 0

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 + 2r = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 2r = 0 + 4
2r = 0 + 4

Combine like terms: 0 + 4 = 4
2r = 4

Divide each side by '2'.
r = 2

Simplifying
r = 2

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