3r-2r-1=19

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Solution for 3r-2r-1=19 equation: 


Simplifying
3r + -2r + -1 = 19

Reorder the terms:
-1 + 3r + -2r = 19

Combine like terms: 3r + -2r = 1r
-1 + 1r = 19

Solving
-1 + 1r = 19

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 1r = 19 + 1

Combine like terms: -1 + 1 = 0
0 + 1r = 19 + 1
1r = 19 + 1

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

Divide each side by '1'.
r = 20

Simplifying
r = 20

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