-6(7-a)=4a

Solution for -6(7-a)=4a equation:

Simplifying
-6(7 + -1a) = 4a
(7 * -6 + -1a * -6) = 4a
(-42 + 6a) = 4a

Solving
-42 + 6a = 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-42 + 6a + -4a = 4a + -4a

Combine like terms: 6a + -4a = 2a
-42 + 2a = 4a + -4a

Combine like terms: 4a + -4a = 0
-42 + 2a = 0

Add '42' to each side of the equation.
-42 + 42 + 2a = 0 + 42

Combine like terms: -42 + 42 = 0
0 + 2a = 0 + 42
2a = 0 + 42

Combine like terms: 0 + 42 = 42
2a = 42

Divide each side by '2'.
a = 21

Simplifying
a = 21