a+6(7-a)=

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

Simplifying
a + 6(7 + -1a) = 0
a + (7 * 6 + -1a * 6) = 0
a + (42 + -6a) = 0

Reorder the terms:
42 + a + -6a = 0

Combine like terms: a + -6a = -5a
42 + -5a = 0

Solving
42 + -5a = 0

Solving for variable 'a'.

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

Add '-42' to each side of the equation.
42 + -42 + -5a = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -5a = 0 + -42
-5a = 0 + -42

Combine like terms: 0 + -42 = -42
-5a = -42

Divide each side by '-5'.
a = 8.4

Simplifying
a = 8.4