Answer:

Step-by-step explanation:
I hope you can understand what i wrote
Answer:

Step-by-step explanation:
Given


Required
Determine the average change
This is calculated as follows:

This gives:


Convert to improper fractions

Convert to multiplication




Answer:
x= -1
Step-by-step explanation:
6x-18+14x+38
group= 20x+20
set equal to 0
20x+20=0
-20 -20
20x/20= -20/20
x= -1