7(r-3)=-42

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Solution for 7(r-3)=-42 equation:


Simplifying
7(r + -3) = -42

Reorder the terms:
7(-3 + r) = -42
(-3 * 7 + r * 7) = -42
(-21 + 7r) = -42

Solving
-21 + 7r = -42

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 7r = -42 + 21

Combine like terms: -21 + 21 = 0
0 + 7r = -42 + 21
7r = -42 + 21

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

Divide each side by '7'.
r = -3

Simplifying
r = -3

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