2-7(2-r)=3(r+8)

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Solution for 2-7(2-r)=3(r+8) equation:


Simplifying
2 + -7(2 + -1r) = 3(r + 8)
2 + (2 * -7 + -1r * -7) = 3(r + 8)
2 + (-14 + 7r) = 3(r + 8)

Combine like terms: 2 + -14 = -12
-12 + 7r = 3(r + 8)

Reorder the terms:
-12 + 7r = 3(8 + r)
-12 + 7r = (8 * 3 + r * 3)
-12 + 7r = (24 + 3r)

Solving
-12 + 7r = 24 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
-12 + 7r + -3r = 24 + 3r + -3r

Combine like terms: 7r + -3r = 4r
-12 + 4r = 24 + 3r + -3r

Combine like terms: 3r + -3r = 0
-12 + 4r = 24 + 0
-12 + 4r = 24

Add '12' to each side of the equation.
-12 + 12 + 4r = 24 + 12

Combine like terms: -12 + 12 = 0
0 + 4r = 24 + 12
4r = 24 + 12

Combine like terms: 24 + 12 = 36
4r = 36

Divide each side by '4'.
r = 9

Simplifying
r = 9

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