4(-5+k)=40-8k

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Solution for 4(-5+k)=40-8k equation:


Simplifying
4(-5 + k) = 40 + -8k
(-5 * 4 + k * 4) = 40 + -8k
(-20 + 4k) = 40 + -8k

Solving
-20 + 4k = 40 + -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.
-20 + 4k + 8k = 40 + -8k + 8k

Combine like terms: 4k + 8k = 12k
-20 + 12k = 40 + -8k + 8k

Combine like terms: -8k + 8k = 0
-20 + 12k = 40 + 0
-20 + 12k = 40

Add '20' to each side of the equation.
-20 + 20 + 12k = 40 + 20

Combine like terms: -20 + 20 = 0
0 + 12k = 40 + 20
12k = 40 + 20

Combine like terms: 40 + 20 = 60
12k = 60

Divide each side by '12'.
k = 5

Simplifying
k = 5

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