Andrew paid $10 for a burger. the burgers went in sale and there was a discount of 20%. what was the sale price of the burgers?

i'm not sure i quite understand, could you provide more information?

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3