x-20+2-(-7)=9

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Solution for x-20+2-(-7)=9 equation:


Simplifying
x + -20 + 2 + -1(-7) = 9

Multiply -1 * -7
x + -20 + 2 + 7 = 9

Reorder the terms:
-20 + 2 + 7 + x = 9

Combine like terms: -20 + 2 = -18
-18 + 7 + x = 9

Combine like terms: -18 + 7 = -11
-11 + x = 9

Solving
-11 + x = 9

Solving for variable 'x'.

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

Add '11' to each side of the equation.
-11 + 11 + x = 9 + 11

Combine like terms: -11 + 11 = 0
0 + x = 9 + 11
x = 9 + 11

Combine like terms: 9 + 11 = 20
x = 20

Simplifying
x = 20

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