6r-21=1+2r

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Solution for 6r-21=1+2r equation:


Simplifying
6r + -21 = 1 + 2r

Reorder the terms:
-21 + 6r = 1 + 2r

Solving
-21 + 6r = 1 + 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.
-21 + 6r + -2r = 1 + 2r + -2r

Combine like terms: 6r + -2r = 4r
-21 + 4r = 1 + 2r + -2r

Combine like terms: 2r + -2r = 0
-21 + 4r = 1 + 0
-21 + 4r = 1

Add '21' to each side of the equation.
-21 + 21 + 4r = 1 + 21

Combine like terms: -21 + 21 = 0
0 + 4r = 1 + 21
4r = 1 + 21

Combine like terms: 1 + 21 = 22
4r = 22

Divide each side by '4'.
r = 5.5

Simplifying
r = 5.5

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