Question

Only the bottom one please help solve and check

Answer 1

Answer:

3

Step-by-step explanation:

16+5f=31

5f=31-16

5f=15

f=3

CHECK:

16+5(3)=31

16+15=31

31=31

since e=-14 in the first equation, the last one is

-14-3=-17, which is correct