3x+84=15

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Solution for 3x+84=15 equation: 


Simplifying
3x + 84 = 15

Reorder the terms:
84 + 3x = 15

Solving
84 + 3x = 15

Solving for variable 'x'.

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

Add '-84' to each side of the equation.
84 + -84 + 3x = 15 + -84

Combine like terms: 84 + -84 = 0
0 + 3x = 15 + -84
3x = 15 + -84

Combine like terms: 15 + -84 = -69
3x = -69

Divide each side by '3'.
x = -23

Simplifying
x = -23

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