-89=3(2-5k)+5(1+7k)

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Solution for -89=3(2-5k)+5(1+7k) equation:


Simplifying
-89 = 3(2 + -5k) + 5(1 + 7k)
-89 = (2 * 3 + -5k * 3) + 5(1 + 7k)
-89 = (6 + -15k) + 5(1 + 7k)
-89 = 6 + -15k + (1 * 5 + 7k * 5)
-89 = 6 + -15k + (5 + 35k)

Reorder the terms:
-89 = 6 + 5 + -15k + 35k

Combine like terms: 6 + 5 = 11
-89 = 11 + -15k + 35k

Combine like terms: -15k + 35k = 20k
-89 = 11 + 20k

Solving
-89 = 11 + 20k

Solving for variable 'k'.

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

Add '-20k' to each side of the equation.
-89 + -20k = 11 + 20k + -20k

Combine like terms: 20k + -20k = 0
-89 + -20k = 11 + 0
-89 + -20k = 11

Add '89' to each side of the equation.
-89 + 89 + -20k = 11 + 89

Combine like terms: -89 + 89 = 0
0 + -20k = 11 + 89
-20k = 11 + 89

Combine like terms: 11 + 89 = 100
-20k = 100

Divide each side by '-20'.
k = -5

Simplifying
k = -5

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