2x-9+6=78

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Solution for 2x-9+6=78 equation: 


Simplifying
2x + -9 + 6 = 78

Reorder the terms:
-9 + 6 + 2x = 78

Combine like terms: -9 + 6 = -3
-3 + 2x = 78

Solving
-3 + 2x = 78

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 2x = 78 + 3

Combine like terms: -3 + 3 = 0
0 + 2x = 78 + 3
2x = 78 + 3

Combine like terms: 78 + 3 = 81
2x = 81

Divide each side by '2'.
x = 40.5

Simplifying
x = 40.5

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