42+7a=(6+a)

Solution for 42+7a=(6+a) equation:

Simplifying
42 + 7a = (6 + a)

Remove parenthesis around (6 + a)
42 + 7a = 6 + a

Solving
42 + 7a = 6 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
42 + 7a + -1a = 6 + a + -1a

Combine like terms: 7a + -1a = 6a
42 + 6a = 6 + a + -1a

Combine like terms: a + -1a = 0
42 + 6a = 6 + 0
42 + 6a = 6

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

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

Combine like terms: 6 + -42 = -36
6a = -36

Divide each side by '6'.
a = -6

Simplifying
a = -6