4(-5k-7)=40-3k

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Solution for 4(-5k-7)=40-3k equation:


Simplifying
4(-5k + -7) = 40 + -3k

Reorder the terms:
4(-7 + -5k) = 40 + -3k
(-7 * 4 + -5k * 4) = 40 + -3k
(-28 + -20k) = 40 + -3k

Solving
-28 + -20k = 40 + -3k

Solving for variable 'k'.

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

Add '3k' to each side of the equation.
-28 + -20k + 3k = 40 + -3k + 3k

Combine like terms: -20k + 3k = -17k
-28 + -17k = 40 + -3k + 3k

Combine like terms: -3k + 3k = 0
-28 + -17k = 40 + 0
-28 + -17k = 40

Add '28' to each side of the equation.
-28 + 28 + -17k = 40 + 28

Combine like terms: -28 + 28 = 0
0 + -17k = 40 + 28
-17k = 40 + 28

Combine like terms: 40 + 28 = 68
-17k = 68

Divide each side by '-17'.
k = -4

Simplifying
k = -4

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