Answer:

Step-by-step explanation:

If you want a solution:
<em>subtract 5 from both sides</em>

<em>multiply both sides by 3</em>

The following are equivalent:
8-10x + 6
8-(10x-6)
-10x+14
Answer:
- The mean length of 10 children's big finger is 8.1 cm
Average length of all the 10 children's finger is (8.1×10) cm = 81 cm.
- The mean length of 11 adult's big finger is 14.1 cm
Average length of all the 11 adult's big finger is (14.1×11) cm =155.1
- Mean length of these 21 people's big finger is

- Hence, <em><u>11.24</u></em> is the right answer.