8k-10+5k+1=90

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Solution for 8k-10+5k+1=90 equation:


Simplifying
8k + -10 + 5k + 1 = 90

Reorder the terms:
-10 + 1 + 8k + 5k = 90

Combine like terms: -10 + 1 = -9
-9 + 8k + 5k = 90

Combine like terms: 8k + 5k = 13k
-9 + 13k = 90

Solving
-9 + 13k = 90

Solving for variable 'k'.

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

Add '9' to each side of the equation.
-9 + 9 + 13k = 90 + 9

Combine like terms: -9 + 9 = 0
0 + 13k = 90 + 9
13k = 90 + 9

Combine like terms: 90 + 9 = 99
13k = 99

Divide each side by '13'.
k = 7.615384615

Simplifying
k = 7.615384615

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