Answer:
w = 11
Step-by-step explanation:
<u>Step 1: Subtract 4 from both sides</u>
15 = w + 4
15 - 4 = w + 4 - 4
11 = w
Answer: w = 11
If the troops hike 7km/2hr (read 7 kilometers per 2 hours), then to find how far they'd hike 4hr, just find multiply the top and bottom by 2. We do this because we found that to get from 2 to 4, we multiply by 2. And since this is a rate, we multiply the top by this value as well, so 7x2=14km
(2 + 8) / 2 * 9 / 3
Using order of operations, you will solve what is in the parenthesis first.
10 / 2 * 9 / 3
Then you divide.
5 * 3
Then you multiply.
5 * 3 = 15
Hope this helps!