Answer:
x= 3 while fo y = 7 that's the answer
If each of them got 1/3 of the deck then they would each get 7 cards
13-x = 13- x
theres is no answer for that x its a variable and 13 is a constant so is just 13-x
To find an average you add all numbers together then divide by the amount of numbers that you added. So if there are 4 numbers you would divide by 4. By going backwards you can find the answer. Multiply 5 by 4 and you get 20, which is the answer.
John can write 1/18 of the manuscript in 1 hour
Hope this helps!!
