Answer:
5.975. 10 6
The six is an exponent of 10 hope this helps
Step-by-step explanation:
To subtract vectors, you simply have to subtract correspondent coordinates.
So, if you have

the subtraction is simply

So, in your case, we have

Step 1. 11x -3x = 8x
Step 2. 14-11 = 3
Answer: 8x + 3
Because 45 is half of 90, 5x=90. 5 times 18 is 90 so x is 18.