The second description is not suitable.
It should be "simplify the terms" sice you are just adding 36 and -20.
Consider the given expression,

Apply the distributive property,

Combine like terms,

Subtract 20 from both sides,

Divide both sides by 27,
Answer:
1 and 7
Step-by-step explanation:
21: 1, 3, 7, 21
28: 1, 2, 4, 7, 14, 28
Common: 1, 7
Answer:
no
Step-by-step explanation:
Take the radius squared 10*10=100 then times that by pi which equals 314 then by 16 which is 5,024 then multiply that by 75 and get 376,800