7(9+k)=84

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Solution for 7(9+k)=84 equation: 


Simplifying
7(9 + k) = 84
(9 * 7 + k * 7) = 84
(63 + 7k) = 84

Solving
63 + 7k = 84

Solving for variable 'k'.

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

Add '-63' to each side of the equation.
63 + -63 + 7k = 84 + -63

Combine like terms: 63 + -63 = 0
0 + 7k = 84 + -63
7k = 84 + -63

Combine like terms: 84 + -63 = 21
7k = 21

Divide each side by '7'.
k = 3

Simplifying
k = 3

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