1+11=-9+X

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Solution for 1+11=-9+X equation:


Simplifying
1 + 11 = -9 + X

Combine like terms: 1 + 11 = 12
12 = -9 + X

Solving
12 = -9 + X

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
12 + -1X = -9 + X + -1X

Combine like terms: X + -1X = 0
12 + -1X = -9 + 0
12 + -1X = -9

Add '-12' to each side of the equation.
12 + -12 + -1X = -9 + -12

Combine like terms: 12 + -12 = 0
0 + -1X = -9 + -12
-1X = -9 + -12

Combine like terms: -9 + -12 = -21
-1X = -21

Divide each side by '-1'.
X = 21

Simplifying
X = 21

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