-40=-5(1-7k)+8(k+1)

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Solution for -40=-5(1-7k)+8(k+1) equation:


Simplifying
-40 = -5(1 + -7k) + 8(k + 1)
-40 = (1 * -5 + -7k * -5) + 8(k + 1)
-40 = (-5 + 35k) + 8(k + 1)

Reorder the terms:
-40 = -5 + 35k + 8(1 + k)
-40 = -5 + 35k + (1 * 8 + k * 8)
-40 = -5 + 35k + (8 + 8k)

Reorder the terms:
-40 = -5 + 8 + 35k + 8k

Combine like terms: -5 + 8 = 3
-40 = 3 + 35k + 8k

Combine like terms: 35k + 8k = 43k
-40 = 3 + 43k

Solving
-40 = 3 + 43k

Solving for variable 'k'.

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

Add '-43k' to each side of the equation.
-40 + -43k = 3 + 43k + -43k

Combine like terms: 43k + -43k = 0
-40 + -43k = 3 + 0
-40 + -43k = 3

Add '40' to each side of the equation.
-40 + 40 + -43k = 3 + 40

Combine like terms: -40 + 40 = 0
0 + -43k = 3 + 40
-43k = 3 + 40

Combine like terms: 3 + 40 = 43
-43k = 43

Divide each side by '-43'.
k = -1

Simplifying
k = -1

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