3(k-7)+8k=12(k-1)

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Solution for 3(k-7)+8k=12(k-1) equation:


Simplifying
3(k + -7) + 8k = 12(k + -1)

Reorder the terms:
3(-7 + k) + 8k = 12(k + -1)
(-7 * 3 + k * 3) + 8k = 12(k + -1)
(-21 + 3k) + 8k = 12(k + -1)

Combine like terms: 3k + 8k = 11k
-21 + 11k = 12(k + -1)

Reorder the terms:
-21 + 11k = 12(-1 + k)
-21 + 11k = (-1 * 12 + k * 12)
-21 + 11k = (-12 + 12k)

Solving
-21 + 11k = -12 + 12k

Solving for variable 'k'.

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

Add '-12k' to each side of the equation.
-21 + 11k + -12k = -12 + 12k + -12k

Combine like terms: 11k + -12k = -1k
-21 + -1k = -12 + 12k + -12k

Combine like terms: 12k + -12k = 0
-21 + -1k = -12 + 0
-21 + -1k = -12

Add '21' to each side of the equation.
-21 + 21 + -1k = -12 + 21

Combine like terms: -21 + 21 = 0
0 + -1k = -12 + 21
-1k = -12 + 21

Combine like terms: -12 + 21 = 9
-1k = 9

Divide each side by '-1'.
k = -9

Simplifying
k = -9

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