-8(3+r)=42

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Solution for -8(3+r)=42 equation: 


Simplifying
-8(3 + r) = 42
(3 * -8 + r * -8) = 42
(-24 + -8r) = 42

Solving
-24 + -8r = 42

Solving for variable 'r'.

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

Add '24' to each side of the equation.
-24 + 24 + -8r = 42 + 24

Combine like terms: -24 + 24 = 0
0 + -8r = 42 + 24
-8r = 42 + 24

Combine like terms: 42 + 24 = 66
-8r = 66

Divide each side by '-8'.
r = -8.25

Simplifying
r = -8.25

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