Simplify to 2.1s + 2.8 - 1.1s = 7.9. Simplify again to s = 5.1. If this is right could you possibly give me brainliest? Hope this helped.
Hope this helps with the answer to your question
Answer:

Step-by-step explanation:
Given

Required
Simplify
To do this, we apply distributive property;


Hence, the simplified form is 
You do 0.621 times 10 which equals your answer 6.21 miles.
Answer:31/40
Step-by-step explanation:
To add you have to have a common denominator. To get that you can multiply each fraction by one in different ways. 2/5 *8/8= 16/40 and 3/8* 5/5= 15/40 and then add those two to give you 31/40.