40-3k=7

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Solution for 40-3k=7 equation: 


Simplifying
40 + -3k = 7

Solving
40 + -3k = 7

Solving for variable 'k'.

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

Add '-40' to each side of the equation.
40 + -40 + -3k = 7 + -40

Combine like terms: 40 + -40 = 0
0 + -3k = 7 + -40
-3k = 7 + -40

Combine like terms: 7 + -40 = -33
-3k = -33

Divide each side by '-3'.
k = 11

Simplifying
k = 11

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