-21+4k=-(8k+2)-7

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Solution for -21+4k=-(8k+2)-7 equation:


Simplifying
-21 + 4k = -1(8k + 2) + -7

Reorder the terms:
-21 + 4k = -1(2 + 8k) + -7
-21 + 4k = (2 * -1 + 8k * -1) + -7
-21 + 4k = (-2 + -8k) + -7

Reorder the terms:
-21 + 4k = -2 + -7 + -8k

Combine like terms: -2 + -7 = -9
-21 + 4k = -9 + -8k

Solving
-21 + 4k = -9 + -8k

Solving for variable 'k'.

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

Add '8k' to each side of the equation.
-21 + 4k + 8k = -9 + -8k + 8k

Combine like terms: 4k + 8k = 12k
-21 + 12k = -9 + -8k + 8k

Combine like terms: -8k + 8k = 0
-21 + 12k = -9 + 0
-21 + 12k = -9

Add '21' to each side of the equation.
-21 + 21 + 12k = -9 + 21

Combine like terms: -21 + 21 = 0
0 + 12k = -9 + 21
12k = -9 + 21

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

Divide each side by '12'.
k = 1

Simplifying
k = 1

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