r+18=7

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Solution for r+18=7 equation: 


Simplifying
r + 18 = 7

Reorder the terms:
18 + r = 7

Solving
18 + r = 7

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + r = 7 + -18

Combine like terms: 18 + -18 = 0
0 + r = 7 + -18
r = 7 + -18

Combine like terms: 7 + -18 = -11
r = -11

Simplifying
r = -11

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