Evaluate expressions 7x -3y - 12 when x = 4 and y=7
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
What we're basically looking for here are ways to get 100 using these numbers.
My immediate first thought was "can we divide the 7's by some 7's to get 100?"
I know that , so I had the idea to make it
. This means that we can use the number 7 four times in the equation
.
However, we're still missing a 1 that we need to include. This is easy, we can just multiply by 1.
So in conclusion, we get
Hope this helped!