6-(m+9-1)=y

Solution for 6-(m+9-1)=y equation:

Simplifying
6 + -1(m + 9 + -1) = y

Reorder the terms:
6 + -1(9 + -1 + m) = y

Combine like terms: 9 + -1 = 8
6 + -1(8 + m) = y
6 + (8 * -1 + m * -1) = y
6 + (-8 + -1m) = y

Combine like terms: 6 + -8 = -2
-2 + -1m = y

Solving
-2 + -1m = y

Solving for variable 'm'.

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

Add '2' to each side of the equation.
-2 + 2 + -1m = 2 + y

Combine like terms: -2 + 2 = 0
0 + -1m = 2 + y
-1m = 2 + y

Divide each side by '-1'.
m = -2 + -1y

Simplifying
m = -2 + -1y