Question

F(a) = a + 3. Find f(7)

Answer 1

Answer: a=1/2=0.5

Explanation:

7(a)=a+3

Subtract a from both sides.

7a−a=3

Combine 7a and −a to get 6a.

6a=3

Divide both sides by 6.

a= 63

​Reduce the fraction

63

​to lowest terms by extracting and canceling out 3.

a= 21