-2(1+4k)-7(k+1)=66

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Solution for -2(1+4k)-7(k+1)=66 equation:


Simplifying
-2(1 + 4k) + -7(k + 1) = 66
(1 * -2 + 4k * -2) + -7(k + 1) = 66
(-2 + -8k) + -7(k + 1) = 66

Reorder the terms:
-2 + -8k + -7(1 + k) = 66
-2 + -8k + (1 * -7 + k * -7) = 66
-2 + -8k + (-7 + -7k) = 66

Reorder the terms:
-2 + -7 + -8k + -7k = 66

Combine like terms: -2 + -7 = -9
-9 + -8k + -7k = 66

Combine like terms: -8k + -7k = -15k
-9 + -15k = 66

Solving
-9 + -15k = 66

Solving for variable 'k'.

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

Add '9' to each side of the equation.
-9 + 9 + -15k = 66 + 9

Combine like terms: -9 + 9 = 0
0 + -15k = 66 + 9
-15k = 66 + 9

Combine like terms: 66 + 9 = 75
-15k = 75

Divide each side by '-15'.
k = -5

Simplifying
k = -5

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