-9=10-3(x+1)+11

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Solution for -9=10-3(x+1)+11 equation:


Simplifying
-9 = 10 + -3(x + 1) + 11

Reorder the terms:
-9 = 10 + -3(1 + x) + 11
-9 = 10 + (1 * -3 + x * -3) + 11
-9 = 10 + (-3 + -3x) + 11

Reorder the terms:
-9 = 10 + -3 + 11 + -3x

Combine like terms: 10 + -3 = 7
-9 = 7 + 11 + -3x

Combine like terms: 7 + 11 = 18
-9 = 18 + -3x

Solving
-9 = 18 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-9 + 3x = 18 + -3x + 3x

Combine like terms: -3x + 3x = 0
-9 + 3x = 18 + 0
-9 + 3x = 18

Add '9' to each side of the equation.
-9 + 9 + 3x = 18 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 18 + 9
3x = 18 + 9

Combine like terms: 18 + 9 = 27
3x = 27

Divide each side by '3'.
x = 9

Simplifying
x = 9

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