23=2+8(r+5)

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Solution for 23=2+8(r+5) equation:


Simplifying
23 = 2 + 8(r + 5)

Reorder the terms:
23 = 2 + 8(5 + r)
23 = 2 + (5 * 8 + r * 8)
23 = 2 + (40 + 8r)

Combine like terms: 2 + 40 = 42
23 = 42 + 8r

Solving
23 = 42 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
23 + -8r = 42 + 8r + -8r

Combine like terms: 8r + -8r = 0
23 + -8r = 42 + 0
23 + -8r = 42

Add '-23' to each side of the equation.
23 + -23 + -8r = 42 + -23

Combine like terms: 23 + -23 = 0
0 + -8r = 42 + -23
-8r = 42 + -23

Combine like terms: 42 + -23 = 19
-8r = 19

Divide each side by '-8'.
r = -2.375

Simplifying
r = -2.375

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