2(b+3)-(8+b)=-7

Solution for 2(b+3)-(8+b)=-7 equation:

Simplifying
2(b + 3) + -1(8 + b) = -7

Reorder the terms:
2(3 + b) + -1(8 + b) = -7
(3 * 2 + b * 2) + -1(8 + b) = -7
(6 + 2b) + -1(8 + b) = -7
6 + 2b + (8 * -1 + b * -1) = -7
6 + 2b + (-8 + -1b) = -7

Reorder the terms:
6 + -8 + 2b + -1b = -7

Combine like terms: 6 + -8 = -2
-2 + 2b + -1b = -7

Combine like terms: 2b + -1b = 1b
-2 + 1b = -7

Solving
-2 + 1b = -7

Solving for variable 'b'.

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

Add '2' to each side of the equation.
-2 + 2 + 1b = -7 + 2

Combine like terms: -2 + 2 = 0
0 + 1b = -7 + 2
1b = -7 + 2

Combine like terms: -7 + 2 = -5
1b = -5

Divide each side by '1'.
b = -5

Simplifying
b = -5