10+(-9)=b

Solution for 10+(-9)=b equation:

Simplifying
10 + (-9) = b
10 + -9 = b

Combine like terms: 10 + -9 = 1
1 = b

Solving
1 = b

Solving for variable 'b'.

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

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

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

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

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

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

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

Simplifying
b = 1