-(b+2)=-2(3+7b)+9b

Solution for -(b+2)=-2(3+7b)+9b equation:

Simplifying
-1(b + 2) = -2(3 + 7b) + 9b

Reorder the terms:
-1(2 + b) = -2(3 + 7b) + 9b
(2 * -1 + b * -1) = -2(3 + 7b) + 9b
(-2 + -1b) = -2(3 + 7b) + 9b
-2 + -1b = (3 * -2 + 7b * -2) + 9b
-2 + -1b = (-6 + -14b) + 9b

Combine like terms: -14b + 9b = -5b
-2 + -1b = -6 + -5b

Solving
-2 + -1b = -6 + -5b

Solving for variable 'b'.

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

Add '5b' to each side of the equation.
-2 + -1b + 5b = -6 + -5b + 5b

Combine like terms: -1b + 5b = 4b
-2 + 4b = -6 + -5b + 5b

Combine like terms: -5b + 5b = 0
-2 + 4b = -6 + 0
-2 + 4b = -6

Add '2' to each side of the equation.
-2 + 2 + 4b = -6 + 2

Combine like terms: -2 + 2 = 0
0 + 4b = -6 + 2
4b = -6 + 2

Combine like terms: -6 + 2 = -4
4b = -4

Divide each side by '4'.
b = -1

Simplifying
b = -1