5[-3.4k-7]+[3k+21]=

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Solution for 5[-3.4k-7]+[3k+21]= equation:


Simplifying
5[-3.4k + -7] + [3k + 21] = 0

Reorder the terms:
5[-7 + -3.4k] + [3k + 21] = 0
[-7 * 5 + -3.4k * 5] + [3k + 21] = 0
[-35 + -17k] + [3k + 21] = 0

Reorder the terms:
-35 + -17k + [21 + 3k] = 0

Remove brackets around [21 + 3k]
-35 + -17k + 21 + 3k = 0

Reorder the terms:
-35 + 21 + -17k + 3k = 0

Combine like terms: -35 + 21 = -14
-14 + -17k + 3k = 0

Combine like terms: -17k + 3k = -14k
-14 + -14k = 0

Solving
-14 + -14k = 0

Solving for variable 'k'.

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

Add '14' to each side of the equation.
-14 + 14 + -14k = 0 + 14

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

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

Divide each side by '-14'.
k = -1

Simplifying
k = -1

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