E.g. 6 + _ = 15. To find the answer, subtract 6 from 15 = 9. Answer: 6 + 9 = 15 This may be relevant or irrelevant to the question.
Number missing (dividend) divided by 5 (divisor)= quotient need 2 of 3 numbers to solve for missing number
missing addend
x means what ever the missing number is. if it was x over 7, you would have to solve for x.
(Average times the total number of addends) minus the given sum of the addends. Uriel.
The median is the middle number. If there is an odd number of numbers in the set, the median is the middle number, and the only way to find the missing number is if the median is the missing number. If there is an even number of numbers in the set, the median is the average of the two middle numbers, and the only way to find the missing number is if the median is one of those two numbers. If it is, you can take the median and the one of the two numbers you know. Use the formula (# +#)/2=median and solve.
trouble shoot it
Calculus.
set up a proportion. cross multiply. solve
You can solve the shape puzzle in Ao Oni by finding the missing die. The missing die is in the second floor of the old building.
the mean is the average; (9 +8+4 + X)/4 = 8; solve for X ; (21 +X)/4 = 8; X = 11
Form an equation and solve it
If I understand it correctly, that means you should solve the following equation: (5 + 9 + 12 + x) / 4 = 9