-3(7-3k)=-84

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Solution for -3(7-3k)=-84 equation: 


Simplifying
-3(7 + -3k) = -84
(7 * -3 + -3k * -3) = -84
(-21 + 9k) = -84

Solving
-21 + 9k = -84

Solving for variable 'k'.

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

Add '21' to each side of the equation.
-21 + 21 + 9k = -84 + 21

Combine like terms: -21 + 21 = 0
0 + 9k = -84 + 21
9k = -84 + 21

Combine like terms: -84 + 21 = -63
9k = -63

Divide each side by '9'.
k = -7

Simplifying
k = -7

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