0.4k+0.2k+0.3=0.9

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Solution for 0.4k+0.2k+0.3=0.9 equation: 


Simplifying
0.4k + 0.2k + 0.3 = 0.9

Reorder the terms:
0.3 + 0.4k + 0.2k = 0.9

Combine like terms: 0.4k + 0.2k = 0.6k
0.3 + 0.6k = 0.9

Solving
0.3 + 0.6k = 0.9

Solving for variable 'k'.

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

Add '-0.3' to each side of the equation.
0.3 + -0.3 + 0.6k = 0.9 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + 0.6k = 0.9 + -0.3
0.6k = 0.9 + -0.3

Combine like terms: 0.9 + -0.3 = 0.6
0.6k = 0.6

Divide each side by '0.6'.
k = 1

Simplifying
k = 1

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