-2k+11+4k-21=20

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Solution for -2k+11+4k-21=20 equation:


Simplifying
-2k + 11 + 4k + -21 = 20

Reorder the terms:
11 + -21 + -2k + 4k = 20

Combine like terms: 11 + -21 = -10
-10 + -2k + 4k = 20

Combine like terms: -2k + 4k = 2k
-10 + 2k = 20

Solving
-10 + 2k = 20

Solving for variable 'k'.

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

Add '10' to each side of the equation.
-10 + 10 + 2k = 20 + 10

Combine like terms: -10 + 10 = 0
0 + 2k = 20 + 10
2k = 20 + 10

Combine like terms: 20 + 10 = 30
2k = 30

Divide each side by '2'.
k = 15

Simplifying
k = 15

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