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A number increased by 9 is 13

User DewinDell
by
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1 Answer

0 votes

Answer:

4

Explanation:

To find the number you have to reverse the equation

Let us call the number "x"

x + 9 = 13

So to find x we flip the equation

13 - 9 = x

Solve it

4 = x

So the missing number is 4

User Melllvar
by
6.7k points