-(x+9)=10

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


Simplifying
-1(x + 9) = 10

Reorder the terms:
-1(9 + x) = 10
(9 * -1 + x * -1) = 10
(-9 + -1x) = 10

Solving
-9 + -1x = 10

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + -1x = 10 + 9

Combine like terms: -9 + 9 = 0
0 + -1x = 10 + 9
-1x = 10 + 9

Combine like terms: 10 + 9 = 19
-1x = 19

Divide each side by '-1'.
x = -19

Simplifying
x = -19

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