1-(x+2)=-9

Solution for 1-(x+2)=-9 equation:

Simplifying
1 + -1(x + 2) = -9

Reorder the terms:
1 + -1(2 + x) = -9
1 + (2 * -1 + x * -1) = -9
1 + (-2 + -1x) = -9

Combine like terms: 1 + -2 = -1
-1 + -1x = -9

Solving
-1 + -1x = -9

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + -1x = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -1x = -9 + 1
-1x = -9 + 1

Combine like terms: -9 + 1 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8