20-(x+15)=9

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Solution for 20-(x+15)=9 equation:


Simplifying
20 + -1(x + 15) = 9

Reorder the terms:
20 + -1(15 + x) = 9
20 + (15 * -1 + x * -1) = 9
20 + (-15 + -1x) = 9

Combine like terms: 20 + -15 = 5
5 + -1x = 9

Solving
5 + -1x = 9

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + -1x = 9 + -5

Combine like terms: 5 + -5 = 0
0 + -1x = 9 + -5
-1x = 9 + -5

Combine like terms: 9 + -5 = 4
-1x = 4

Divide each side by '-1'.
x = -4

Simplifying
x = -4

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