Question

find the rule and complete the table.
in out
39 35
74
87 83
90 86
94 90
95

Explanation:

Step1: Identify the rule

By observing the given pairs (39 - 35 = 4, 87 - 83 = 4, 90 - 86 = 4, 94 - 90 = 4), the rule is that the output is 4 less than the input.

Step2: Find the missing input for output 74

Let the input be $x$. Using the rule $x-4 = 74$. Solving for $x$, we get $x=74 + 4=78$.

Step3: Find the missing input for output 95

Let the input be $y$. Using the rule $y - 4=95$. Solving for $y$, we get $y=95 + 4 = 99$.

Answer:

The missing values are 78 and 99.