24=r+9

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Solution for 24=r+9 equation:


Simplifying
24 = r + 9

Reorder the terms:
24 = 9 + r

Solving
24 = 9 + 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.
24 + -1r = 9 + r + -1r

Combine like terms: r + -1r = 0
24 + -1r = 9 + 0
24 + -1r = 9

Add '-24' to each side of the equation.
24 + -24 + -1r = 9 + -24

Combine like terms: 24 + -24 = 0
0 + -1r = 9 + -24
-1r = 9 + -24

Combine like terms: 9 + -24 = -15
-1r = -15

Divide each side by '-1'.
r = 15

Simplifying
r = 15

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