(9k+30)-(4k+10)=100

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Solution for (9k+30)-(4k+10)=100 equation:


Simplifying
(9k + 30) + -1(4k + 10) = 100

Reorder the terms:
(30 + 9k) + -1(4k + 10) = 100

Remove parenthesis around (30 + 9k)
30 + 9k + -1(4k + 10) = 100

Reorder the terms:
30 + 9k + -1(10 + 4k) = 100
30 + 9k + (10 * -1 + 4k * -1) = 100
30 + 9k + (-10 + -4k) = 100

Reorder the terms:
30 + -10 + 9k + -4k = 100

Combine like terms: 30 + -10 = 20
20 + 9k + -4k = 100

Combine like terms: 9k + -4k = 5k
20 + 5k = 100

Solving
20 + 5k = 100

Solving for variable 'k'.

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

Add '-20' to each side of the equation.
20 + -20 + 5k = 100 + -20

Combine like terms: 20 + -20 = 0
0 + 5k = 100 + -20
5k = 100 + -20

Combine like terms: 100 + -20 = 80
5k = 80

Divide each side by '5'.
k = 16

Simplifying
k = 16

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