500-(120-x)=479-99

To solve this equation, we need to simplify both sides and isolate the variable x.

Starting with the left side:

500 - (120 - x)

We can simplify the parentheses by subtracting x from 120:

500 - 120 + x

Then, we subtract 120 from 500:

380 + x

Now let's simplify the right side of the equation:

479 - 99

Subtracting 99 from 479, we get:

380

So the equation becomes:

380 + x = 380

To isolate x, we need to subtract 380 from both sides:

380 + x - 380 = 380 - 380

Simplifying both sides:

x = 0

Therefore, the solution to the equation is x = 0.