-7(k+9)-(-8k-6)=9

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Solution for -7(k+9)-(-8k-6)=9 equation:


Simplifying
-7(k + 9) + -1(-8k + -6) = 9

Reorder the terms:
-7(9 + k) + -1(-8k + -6) = 9
(9 * -7 + k * -7) + -1(-8k + -6) = 9
(-63 + -7k) + -1(-8k + -6) = 9

Reorder the terms:
-63 + -7k + -1(-6 + -8k) = 9
-63 + -7k + (-6 * -1 + -8k * -1) = 9
-63 + -7k + (6 + 8k) = 9

Reorder the terms:
-63 + 6 + -7k + 8k = 9

Combine like terms: -63 + 6 = -57
-57 + -7k + 8k = 9

Combine like terms: -7k + 8k = 1k
-57 + 1k = 9

Solving
-57 + 1k = 9

Solving for variable 'k'.

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

Add '57' to each side of the equation.
-57 + 57 + 1k = 9 + 57

Combine like terms: -57 + 57 = 0
0 + 1k = 9 + 57
1k = 9 + 57

Combine like terms: 9 + 57 = 66
1k = 66

Divide each side by '1'.
k = 66

Simplifying
k = 66

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