7(k-6)-(-9k-2)=15k

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Solution for 7(k-6)-(-9k-2)=15k equation:


Simplifying
7(k + -6) + -1(-9k + -2) = 15k

Reorder the terms:
7(-6 + k) + -1(-9k + -2) = 15k
(-6 * 7 + k * 7) + -1(-9k + -2) = 15k
(-42 + 7k) + -1(-9k + -2) = 15k

Reorder the terms:
-42 + 7k + -1(-2 + -9k) = 15k
-42 + 7k + (-2 * -1 + -9k * -1) = 15k
-42 + 7k + (2 + 9k) = 15k

Reorder the terms:
-42 + 2 + 7k + 9k = 15k

Combine like terms: -42 + 2 = -40
-40 + 7k + 9k = 15k

Combine like terms: 7k + 9k = 16k
-40 + 16k = 15k

Solving
-40 + 16k = 15k

Solving for variable 'k'.

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

Add '-15k' to each side of the equation.
-40 + 16k + -15k = 15k + -15k

Combine like terms: 16k + -15k = 1k
-40 + 1k = 15k + -15k

Combine like terms: 15k + -15k = 0
-40 + 1k = 0

Add '40' to each side of the equation.
-40 + 40 + 1k = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 1k = 0 + 40
1k = 0 + 40

Combine like terms: 0 + 40 = 40
1k = 40

Divide each side by '1'.
k = 40

Simplifying
k = 40

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