(-0.5b+-0.25c)+(1.3+-0.83c)+c=-2

Solution for (-0.5b+-0.25c)+(1.3+-0.83c)+c=-2 equation:

Simplifying
(-0.5b + -0.25c) + (1.3 + -0.83c) + c = -2

Remove parenthesis around (-0.5b + -0.25c)
-0.5b + -0.25c + (1.3 + -0.83c) + c = -2

Remove parenthesis around (1.3 + -0.83c)
-0.5b + -0.25c + 1.3 + -0.83c + c = -2

Reorder the terms:
1.3 + -0.5b + -0.25c + -0.83c + c = -2

Combine like terms: -0.25c + -0.83c = -1.08c
1.3 + -0.5b + -1.08c + c = -2

Combine like terms: -1.08c + c = -0.08c
1.3 + -0.5b + -0.08c = -2

Solving
1.3 + -0.5b + -0.08c = -2

Solving for variable 'b'.

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

Add '-1.3' to each side of the equation.
1.3 + -0.5b + -1.3 + -0.08c = -2 + -1.3

Reorder the terms:
1.3 + -1.3 + -0.5b + -0.08c = -2 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + -0.5b + -0.08c = -2 + -1.3
-0.5b + -0.08c = -2 + -1.3

Combine like terms: -2 + -1.3 = -3.3
-0.5b + -0.08c = -3.3

Add '0.08c' to each side of the equation.
-0.5b + -0.08c + 0.08c = -3.3 + 0.08c

Combine like terms: -0.08c + 0.08c = 0.00
-0.5b + 0.00 = -3.3 + 0.08c
-0.5b = -3.3 + 0.08c

Divide each side by '-0.5'.
b = 6.6 + -0.16c

Simplifying
b = 6.6 + -0.16c