9x+3(4x)=84

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Solution for 9x+3(4x)=84 equation: 


Simplifying
9x + 3(4x) = 84

Remove parenthesis around (4x)
9x + 3 * 4x = 84

Multiply 3 * 4
9x + 12x = 84

Combine like terms: 9x + 12x = 21x
21x = 84

Solving
21x = 84

Solving for variable 'x'.

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

Divide each side by '21'.
x = 4

Simplifying
x = 4

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