30k+70=20k+90

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Solution for 30k+70=20k+90 equation:


Simplifying
30k + 70 = 20k + 90

Reorder the terms:
70 + 30k = 20k + 90

Reorder the terms:
70 + 30k = 90 + 20k

Solving
70 + 30k = 90 + 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.
70 + 30k + -20k = 90 + 20k + -20k

Combine like terms: 30k + -20k = 10k
70 + 10k = 90 + 20k + -20k

Combine like terms: 20k + -20k = 0
70 + 10k = 90 + 0
70 + 10k = 90

Add '-70' to each side of the equation.
70 + -70 + 10k = 90 + -70

Combine like terms: 70 + -70 = 0
0 + 10k = 90 + -70
10k = 90 + -70

Combine like terms: 90 + -70 = 20
10k = 20

Divide each side by '10'.
k = 2

Simplifying
k = 2

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