7(3r+5)=-7

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Solution for 7(3r+5)=-7 equation:


Simplifying
7(3r + 5) = -7

Reorder the terms:
7(5 + 3r) = -7
(5 * 7 + 3r * 7) = -7
(35 + 21r) = -7

Solving
35 + 21r = -7

Solving for variable 'r'.

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

Add '-35' to each side of the equation.
35 + -35 + 21r = -7 + -35

Combine like terms: 35 + -35 = 0
0 + 21r = -7 + -35
21r = -7 + -35

Combine like terms: -7 + -35 = -42
21r = -42

Divide each side by '21'.
r = -2

Simplifying
r = -2

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