-75=3(k-7)-6(3k+4)

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Solution for -75=3(k-7)-6(3k+4) equation:


Simplifying
-75 = 3(k + -7) + -6(3k + 4)

Reorder the terms:
-75 = 3(-7 + k) + -6(3k + 4)
-75 = (-7 * 3 + k * 3) + -6(3k + 4)
-75 = (-21 + 3k) + -6(3k + 4)

Reorder the terms:
-75 = -21 + 3k + -6(4 + 3k)
-75 = -21 + 3k + (4 * -6 + 3k * -6)
-75 = -21 + 3k + (-24 + -18k)

Reorder the terms:
-75 = -21 + -24 + 3k + -18k

Combine like terms: -21 + -24 = -45
-75 = -45 + 3k + -18k

Combine like terms: 3k + -18k = -15k
-75 = -45 + -15k

Solving
-75 = -45 + -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.
-75 + 15k = -45 + -15k + 15k

Combine like terms: -15k + 15k = 0
-75 + 15k = -45 + 0
-75 + 15k = -45

Add '75' to each side of the equation.
-75 + 75 + 15k = -45 + 75

Combine like terms: -75 + 75 = 0
0 + 15k = -45 + 75
15k = -45 + 75

Combine like terms: -45 + 75 = 30
15k = 30

Divide each side by '15'.
k = 2

Simplifying
k = 2

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