What is the missing number in this simplified exponential expression: 7? ÷ 7 and 5 = 7 and 12??

1 answer

To find the missing number, we need to solve the equation step by step. Given the equation 7? ÷ 7 and 5 = 7 and 12, we can start by evaluating the expression on the left side of the equation, which involves exponentiation and division:

7? ÷ 7 and 5

As no exponent is specified, we can assume it is an exponent of 1. Therefore, 7? is equivalent to 7^1, which is simply 7.

Now our expression becomes:

7 ÷ 7 and 5

Next, proceed with the multiplication before division:

7 ÷ (7 x 5)

Performing the multiplication inside the parentheses:

7 ÷ 35

Finally, evaluate the division:

0.2

Therefore, the missing number is 0.2.