[1+6c]-7=-3

Solution for [1+6c]-7=-3 equation:

Simplifying
[1 + 6c] + -7 = -3

Remove brackets around [1 + 6c]
1 + 6c + -7 = -3

Reorder the terms:
1 + -7 + 6c = -3

Combine like terms: 1 + -7 = -6
-6 + 6c = -3

Solving
-6 + 6c = -3

Solving for variable 'c'.

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

Add '6' to each side of the equation.
-6 + 6 + 6c = -3 + 6

Combine like terms: -6 + 6 = 0
0 + 6c = -3 + 6
6c = -3 + 6

Combine like terms: -3 + 6 = 3
6c = 3

Divide each side by '6'.
c = 0.5

Simplifying
c = 0.5