1+(a+b)=

Solution for 1+(a+b)= equation:

Simplifying
1 + (a + b) = 0

Remove parenthesis around (a + b)
1 + a + b = 0

Solving
1 + a + b = 0

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + a + -1 + b = 0 + -1

Reorder the terms:
1 + -1 + a + b = 0 + -1

Combine like terms: 1 + -1 = 0
0 + a + b = 0 + -1
a + b = 0 + -1

Combine like terms: 0 + -1 = -1
a + b = -1

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

Combine like terms: b + -1b = 0
a + 0 = -1 + -1b
a = -1 + -1b

Simplifying
a = -1 + -1b