7-2k-5k=42

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Solution for 7-2k-5k=42 equation: 


Simplifying
7 + -2k + -5k = 42

Combine like terms: -2k + -5k = -7k
7 + -7k = 42

Solving
7 + -7k = 42

Solving for variable 'k'.

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

Add '-7' to each side of the equation.
7 + -7 + -7k = 42 + -7

Combine like terms: 7 + -7 = 0
0 + -7k = 42 + -7
-7k = 42 + -7

Combine like terms: 42 + -7 = 35
-7k = 35

Divide each side by '-7'.
k = -5

Simplifying
k = -5

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