2+-5-7=-4(k-5)

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Solution for 2+-5-7=-4(k-5) equation:


Simplifying
2 + -5 + -7 = -4(k + -5)

Combine like terms: 2 + -5 = -3
-3 + -7 = -4(k + -5)

Combine like terms: -3 + -7 = -10
-10 = -4(k + -5)

Reorder the terms:
-10 = -4(-5 + k)
-10 = (-5 * -4 + k * -4)
-10 = (20 + -4k)

Solving
-10 = 20 + -4k

Solving for variable 'k'.

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

Add '4k' to each side of the equation.
-10 + 4k = 20 + -4k + 4k

Combine like terms: -4k + 4k = 0
-10 + 4k = 20 + 0
-10 + 4k = 20

Add '10' to each side of the equation.
-10 + 10 + 4k = 20 + 10

Combine like terms: -10 + 10 = 0
0 + 4k = 20 + 10
4k = 20 + 10

Combine like terms: 20 + 10 = 30
4k = 30

Divide each side by '4'.
k = 7.5

Simplifying
k = 7.5

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