821=r+11

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Solution for 821=r+11 equation:


Simplifying
821 = r + 11

Reorder the terms:
821 = 11 + r

Solving
821 = 11 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
821 + -1r = 11 + r + -1r

Combine like terms: r + -1r = 0
821 + -1r = 11 + 0
821 + -1r = 11

Add '-821' to each side of the equation.
821 + -821 + -1r = 11 + -821

Combine like terms: 821 + -821 = 0
0 + -1r = 11 + -821
-1r = 11 + -821

Combine like terms: 11 + -821 = -810
-1r = -810

Divide each side by '-1'.
r = 810

Simplifying
r = 810

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