23=45-r

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Solution for 23=45-r equation:


Simplifying
23 = 45 + -1r

Solving
23 = 45 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
23 + r = 45 + -1r + r

Combine like terms: -1r + r = 0
23 + r = 45 + 0
23 + r = 45

Add '-23' to each side of the equation.
23 + -23 + r = 45 + -23

Combine like terms: 23 + -23 = 0
0 + r = 45 + -23
r = 45 + -23

Combine like terms: 45 + -23 = 22
r = 22

Simplifying
r = 22

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