2k-(2.1k-7.5)=28.6

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Solution for 2k-(2.1k-7.5)=28.6 equation: 


Simplifying
2k + -1(2.1k + -7.5) = 28.6

Reorder the terms:
2k + -1(-7.5 + 2.1k) = 28.6
2k + (-7.5 * -1 + 2.1k * -1) = 28.6
2k + (7.5 + -2.1k) = 28.6

Reorder the terms:
7.5 + 2k + -2.1k = 28.6

Combine like terms: 2k + -2.1k = -0.1k
7.5 + -0.1k = 28.6

Solving
7.5 + -0.1k = 28.6

Solving for variable 'k'.

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

Add '-7.5' to each side of the equation.
7.5 + -7.5 + -0.1k = 28.6 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + -0.1k = 28.6 + -7.5
-0.1k = 28.6 + -7.5

Combine like terms: 28.6 + -7.5 = 21.1
-0.1k = 21.1

Divide each side by '-0.1'.
k = -211

Simplifying
k = -211

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