84=7(9+k)

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


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

Solving
84 = 63 + 7k

Solving for variable 'k'.

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

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

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

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

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

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

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

Simplifying
k = 3

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