6r-21=-48+9r

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Solution for 6r-21=-48+9r equation:


Simplifying
6r + -21 = -48 + 9r

Reorder the terms:
-21 + 6r = -48 + 9r

Solving
-21 + 6r = -48 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
-21 + 6r + -9r = -48 + 9r + -9r

Combine like terms: 6r + -9r = -3r
-21 + -3r = -48 + 9r + -9r

Combine like terms: 9r + -9r = 0
-21 + -3r = -48 + 0
-21 + -3r = -48

Add '21' to each side of the equation.
-21 + 21 + -3r = -48 + 21

Combine like terms: -21 + 21 = 0
0 + -3r = -48 + 21
-3r = -48 + 21

Combine like terms: -48 + 21 = -27
-3r = -27

Divide each side by '-3'.
r = 9

Simplifying
r = 9

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