-(0+3)=-(a+1)-2

Solution for -(0+3)=-(a+1)-2 equation:

Simplifying
-1(0 + 3) = -1(a + 1) + -2

Combine like terms: 0 + 3 = 3
-1(3) = -1(a + 1) + -2

Multiply -1 * 3
-3 = -1(a + 1) + -2

Reorder the terms:
-3 = -1(1 + a) + -2
-3 = (1 * -1 + a * -1) + -2
-3 = (-1 + -1a) + -2

Reorder the terms:
-3 = -1 + -2 + -1a

Combine like terms: -1 + -2 = -3
-3 = -3 + -1a

Add '3' to each side of the equation.
-3 + 3 = -3 + 3 + -1a

Combine like terms: -3 + 3 = 0
0 = -3 + 3 + -1a

Combine like terms: -3 + 3 = 0
0 = 0 + -1a
0 = -1a

Solving
0 = -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
0 + a = -1a + a
Remove the zero:
a = -1a + a

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

Simplifying
a = 0