7(3a+6b)=

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Solution for 7(3a+6b)= equation: 


Simplifying
7(3a + 6b) = 0
(3a * 7 + 6b * 7) = 0
(21a + 42b) = 0

Solving
21a + 42b = 0

Solving for variable 'a'.

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

Add '-42b' to each side of the equation.
21a + 42b + -42b = 0 + -42b

Combine like terms: 42b + -42b = 0
21a + 0 = 0 + -42b
21a = 0 + -42b
Remove the zero:
21a = -42b

Divide each side by '21'.
a = -2b

Simplifying
a = -2b

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