9-x=78

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Solution for 9-x=78 equation:


Simplifying
9 + -1x = 78

Solving
9 + -1x = 78

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 + -9 + -1x = 78 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = 78 + -9
-1x = 78 + -9

Combine like terms: 78 + -9 = 69
-1x = 69

Divide each side by '-1'.
x = -69

Simplifying
x = -69

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