-31=2+3(r-8)

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Solution for -31=2+3(r-8) equation:


Simplifying
-31 = 2 + 3(r + -8)

Reorder the terms:
-31 = 2 + 3(-8 + r)
-31 = 2 + (-8 * 3 + r * 3)
-31 = 2 + (-24 + 3r)

Combine like terms: 2 + -24 = -22
-31 = -22 + 3r

Solving
-31 = -22 + 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.
-31 + -3r = -22 + 3r + -3r

Combine like terms: 3r + -3r = 0
-31 + -3r = -22 + 0
-31 + -3r = -22

Add '31' to each side of the equation.
-31 + 31 + -3r = -22 + 31

Combine like terms: -31 + 31 = 0
0 + -3r = -22 + 31
-3r = -22 + 31

Combine like terms: -22 + 31 = 9
-3r = 9

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

Simplifying
r = -3

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