3[x+y]-9=

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Solution for 3[x+y]-9= equation:


Simplifying
3[x + y] + -9 = 0
[x * 3 + y * 3] + -9 = 0
[3x + 3y] + -9 = 0

Reorder the terms:
-9 + 3x + 3y = 0

Solving
-9 + 3x + 3y = 0

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 + 3x + 9 + 3y = 0 + 9

Reorder the terms:
-9 + 9 + 3x + 3y = 0 + 9

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

Combine like terms: 0 + 9 = 9
3x + 3y = 9

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

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

Divide each side by '3'.
x = 3 + -1y

Simplifying
x = 3 + -1y

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