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 parenthesis 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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