In order to have the variable by itself you have to add 20 to both sides. So your answer would be a=b+20. I hope this helps love! :)
Answer:
22 Inches Squared
Step-by-step explanation:

l = 1
w = 5
h = 1

The surface area should be 22in^2.
Brainilest appreciated.
Answer:
Sydney is 31 years old.
Step-by-step explanation:
LET age of Devon be x years
and let age of Sydney be y years
if x=y-5-------(i)
x+y= 57 (sum)
Using (i)
(y-5)+y=57
2y=62
y=31
Answer:
y=-3 is the correct answer
Answer: D understand the meaning of the text
Step-by-step explanation: