-2(1+7k)=15

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Solution for -2(1+7k)=15 equation: 


Simplifying
-2(1 + 7k) = 15
(1 * -2 + 7k * -2) = 15
(-2 + -14k) = 15

Solving
-2 + -14k = 15

Solving for variable 'k'.

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

Add '2' to each side of the equation.
-2 + 2 + -14k = 15 + 2

Combine like terms: -2 + 2 = 0
0 + -14k = 15 + 2
-14k = 15 + 2

Combine like terms: 15 + 2 = 17
-14k = 17

Divide each side by '-14'.
k = -1.214285714

Simplifying
k = -1.214285714

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