-3(1+7k)=30

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Solution for -3(1+7k)=30 equation: 


Simplifying
-3(1 + 7k) = 30
(1 * -3 + 7k * -3) = 30
(-3 + -21k) = 30

Solving
-3 + -21k = 30

Solving for variable 'k'.

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

Add '3' to each side of the equation.
-3 + 3 + -21k = 30 + 3

Combine like terms: -3 + 3 = 0
0 + -21k = 30 + 3
-21k = 30 + 3

Combine like terms: 30 + 3 = 33
-21k = 33

Divide each side by '-21'.
k = -1.571428571

Simplifying
k = -1.571428571

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