(3x+9)+(3x-3)=90

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Solution for (3x+9)+(3x-3)=90 equation:


Simplifying
(3x + 9) + (3x + -3) = 90

Reorder the terms:
(9 + 3x) + (3x + -3) = 90

Remove parenthesis around (9 + 3x)
9 + 3x + (3x + -3) = 90

Reorder the terms:
9 + 3x + (-3 + 3x) = 90

Remove parenthesis around (-3 + 3x)
9 + 3x + -3 + 3x = 90

Reorder the terms:
9 + -3 + 3x + 3x = 90

Combine like terms: 9 + -3 = 6
6 + 3x + 3x = 90

Combine like terms: 3x + 3x = 6x
6 + 6x = 90

Solving
6 + 6x = 90

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 6x = 90 + -6

Combine like terms: 6 + -6 = 0
0 + 6x = 90 + -6
6x = 90 + -6

Combine like terms: 90 + -6 = 84
6x = 84

Divide each side by '6'.
x = 14

Simplifying
x = 14

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