17r-20=18r

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Solution for 17r-20=18r equation:


Simplifying
17r + -20 = 18r

Reorder the terms:
-20 + 17r = 18r

Solving
-20 + 17r = 18r

Solving for variable 'r'.

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

Add '-18r' to each side of the equation.
-20 + 17r + -18r = 18r + -18r

Combine like terms: 17r + -18r = -1r
-20 + -1r = 18r + -18r

Combine like terms: 18r + -18r = 0
-20 + -1r = 0

Add '20' to each side of the equation.
-20 + 20 + -1r = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -1r = 0 + 20
-1r = 0 + 20

Combine like terms: 0 + 20 = 20
-1r = 20

Divide each side by '-1'.
r = -20

Simplifying
r = -20

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