Solve the Equation: Finding the Missing Number in 9+?-3=25

Question

9+?3=25 9+?-3=25

Video Solution

Solution Steps

00:20 We will subtract 6 from both sides to isolate the unknown

Step-by-Step Solution

To find out which number is missing, we solve the entire exercise to know which number we will have to add to get a result of 25:

93=6 9-3=6

To make 6 equal to 25 we will have to add 19.

Let's verify:

256=19 25-6=19

Answer

19 19