17r+18=221-12r

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Solution for 17r+18=221-12r equation:


Simplifying
17r + 18 = 221 + -12r

Reorder the terms:
18 + 17r = 221 + -12r

Solving
18 + 17r = 221 + -12r

Solving for variable 'r'.

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

Add '12r' to each side of the equation.
18 + 17r + 12r = 221 + -12r + 12r

Combine like terms: 17r + 12r = 29r
18 + 29r = 221 + -12r + 12r

Combine like terms: -12r + 12r = 0
18 + 29r = 221 + 0
18 + 29r = 221

Add '-18' to each side of the equation.
18 + -18 + 29r = 221 + -18

Combine like terms: 18 + -18 = 0
0 + 29r = 221 + -18
29r = 221 + -18

Combine like terms: 221 + -18 = 203
29r = 203

Divide each side by '29'.
r = 7

Simplifying
r = 7

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