3r-27=-21+2r

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Solution for 3r-27=-21+2r equation:


Simplifying
3r + -27 = -21 + 2r

Reorder the terms:
-27 + 3r = -21 + 2r

Solving
-27 + 3r = -21 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-27 + 3r + -2r = -21 + 2r + -2r

Combine like terms: 3r + -2r = 1r
-27 + 1r = -21 + 2r + -2r

Combine like terms: 2r + -2r = 0
-27 + 1r = -21 + 0
-27 + 1r = -21

Add '27' to each side of the equation.
-27 + 27 + 1r = -21 + 27

Combine like terms: -27 + 27 = 0
0 + 1r = -21 + 27
1r = -21 + 27

Combine like terms: -21 + 27 = 6
1r = 6

Divide each side by '1'.
r = 6

Simplifying
r = 6

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