19r-13=20r

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Solution for 19r-13=20r equation:


Simplifying
19r + -13 = 20r

Reorder the terms:
-13 + 19r = 20r

Solving
-13 + 19r = 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
-13 + 19r + -20r = 20r + -20r

Combine like terms: 19r + -20r = -1r
-13 + -1r = 20r + -20r

Combine like terms: 20r + -20r = 0
-13 + -1r = 0

Add '13' to each side of the equation.
-13 + 13 + -1r = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -1r = 0 + 13
-1r = 0 + 13

Combine like terms: 0 + 13 = 13
-1r = 13

Divide each side by '-1'.
r = -13

Simplifying
r = -13

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