The number is 9 set it up you will have n over 3 plus five equals 8 . substract 5 from both sides then you will have n over 3 equals 3 . you have to multiply the n over 3 by 3 to get rid of the 3 and you multiply the 3 on the other side by three to get n equals 9
Step-by-step explanation: If we want to find the amount that was in the pitcher before then we subtract 2.6 from 10.4 to find the original amount because if the pitcher were to contain an amount that only adds up to 10.4 before we add 2.6 then the number that adds with 2.6 to equal 10.4 is our answer