3a+6b-7(a-6b)=

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

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

Reorder the terms:
3a + -7a + 6b + 42b = 0

Combine like terms: 3a + -7a = -4a
-4a + 6b + 42b = 0

Combine like terms: 6b + 42b = 48b
-4a + 48b = 0

Solving
-4a + 48b = 0

Solving for variable 'a'.

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

Add '-48b' to each side of the equation.
-4a + 48b + -48b = 0 + -48b

Combine like terms: 48b + -48b = 0
-4a + 0 = 0 + -48b
-4a = 0 + -48b
Remove the zero:
-4a = -48b

Divide each side by '-4'.
a = 12b

Simplifying
a = 12b