Hi, my son and I are stuck on his homework. He has done all the sheet except 4 similar questions. Please can I give you an example.....Q. Think of a number, add on 3,multiply it by 2, subtract 2, divide by 2, subtract your first number. What is your answer?
If you can help we would be very grateful.
Think of a number,
I am thinking of the number N
add on 3,
I get N+3
multiply it by 2,
I get 2(N+3), which upon distributing is 2N+6.
subtract 2,
I get 2N+6 - 2 which after combining terms gives 2N+4
divide by 2,
I get which equals , and upon canceling,
, becomes N+2
subtract your first number.
My first number was N, so subtracting it gives N+2-N, which
after simplifying, gives 2
What is your answer?
My answer is always 2 no matter what N is.
Edwin