A-r=r

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Solution for A-r=r equation:


Simplifying
A + -1r = r

Solving
A + -1r = r

Solving for variable 'A'.

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

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

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

Combine like terms: r + r = 2r
A = 2r

Simplifying
A = 2r

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