k-30=5k-40

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Solution for k-30=5k-40 equation:


Simplifying
k + -30 = 5k + -40

Reorder the terms:
-30 + k = 5k + -40

Reorder the terms:
-30 + k = -40 + 5k

Solving
-30 + k = -40 + 5k

Solving for variable 'k'.

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

Add '-5k' to each side of the equation.
-30 + k + -5k = -40 + 5k + -5k

Combine like terms: k + -5k = -4k
-30 + -4k = -40 + 5k + -5k

Combine like terms: 5k + -5k = 0
-30 + -4k = -40 + 0
-30 + -4k = -40

Add '30' to each side of the equation.
-30 + 30 + -4k = -40 + 30

Combine like terms: -30 + 30 = 0
0 + -4k = -40 + 30
-4k = -40 + 30

Combine like terms: -40 + 30 = -10
-4k = -10

Divide each side by '-4'.
k = 2.5

Simplifying
k = 2.5

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