7(r+12)=105

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Solution for 7(r+12)=105 equation:


Simplifying
7(r + 12) = 105

Reorder the terms:
7(12 + r) = 105
(12 * 7 + r * 7) = 105
(84 + 7r) = 105

Solving
84 + 7r = 105

Solving for variable 'r'.

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

Add '-84' to each side of the equation.
84 + -84 + 7r = 105 + -84

Combine like terms: 84 + -84 = 0
0 + 7r = 105 + -84
7r = 105 + -84

Combine like terms: 105 + -84 = 21
7r = 21

Divide each side by '7'.
r = 3

Simplifying
r = 3

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