2(4r-1)=r+19

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Solution for 2(4r-1)=r+19 equation:


Simplifying
2(4r + -1) = r + 19

Reorder the terms:
2(-1 + 4r) = r + 19
(-1 * 2 + 4r * 2) = r + 19
(-2 + 8r) = r + 19

Reorder the terms:
-2 + 8r = 19 + r

Solving
-2 + 8r = 19 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-2 + 8r + -1r = 19 + r + -1r

Combine like terms: 8r + -1r = 7r
-2 + 7r = 19 + r + -1r

Combine like terms: r + -1r = 0
-2 + 7r = 19 + 0
-2 + 7r = 19

Add '2' to each side of the equation.
-2 + 2 + 7r = 19 + 2

Combine like terms: -2 + 2 = 0
0 + 7r = 19 + 2
7r = 19 + 2

Combine like terms: 19 + 2 = 21
7r = 21

Divide each side by '7'.
r = 3

Simplifying
r = 3

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