Steve didn't put the parenthesis when he went to the second part of the equation, instead of putting the parenthesis he skipped them and keep going along with the equation.
I don't know if you needed this but the answer to the math problem would be
Answer: 2 x
Dannng I thought I seen this one before
A way of undoing any operation, is using the inverse of the operation. So if you want to ‘undo’ addition you subtract, and if you want to ‘undo’ multiplication you divide.
Hope this helps!!
