For the equation to work, you have to have the same number on both sides of the equal sign
so to find ?, you can do:
13 - 2 = 12 - ? Simplify
11 = 12 - ? Subtract 12 on both sides
-1 = - ? Multiply -1 on both sides
1 = ?
Answer:
Equation is 
where 
denotes number of cups of orange juice needed by Sam.
Step-by-step explanation:
Let denotes number of cups of orange juice needed by Sam.
Number of cups needed to make punch 
Number of cups with Sam 
Therefore,
Answer:
0.27
Step-by-step explanation:
1. put it into the division form which is 0.2268/ 0.84.
2. then see if 0.84 can go into 0.22 if not then 0.226
3. if yes see how many times it can go into 0.226 which is 2.
4. continute these steps until there is no remainder
