Question

1. a -7 when a = 3 a + 7 = 3 + 7 = __​

Answer 1

If a = 3

a -7 = -4

Explanation:

Here, we want to find the value of a -7 given that a = 3

To find this value, we are going to make a substitution

We simply substitute 3 for the value of a

we have this as;

3 -7 = -4