Your equation looks like this:

All you have to do is divide 2/3 by 1/8. Without using a calculator, we can do this through the Keep Change Flip method. Keep the first faction 2/3, change the ÷ to a ×, and flip the 1/8 to 8/1. Now we multiply as usual:
b = 2/3 × 8/1
b = 16/3
9x10 to the -8th power.
Since the numbers are both x10^-8, you can simply add 2 and 7. If you would rather look at it as:
0.00000007 + 0.00000002 = 0.00000009 = 10x10^-8
then you will get the same answer.
Answer:
I think you would do $9.70 times 2. Afterward, you would divide 9.70 by 5 which gives you 1.94. Finally, you add them together, leaving you with. 11.64. I hope I helped with this.
:D
Ok so remember
when 2 lines intersect the 2 opposite angles that face each other are equal measure
also, remember that a straight line=180
so
therefor BEA=CED and we want to find BEA, also
BED=180 so
BEC+CED=BED=180
aka
6x+7+5x-3=180
solve
6x+7+5x-3=180
combine
11x+4=180
subttract 4
11x=176
diivde 11
x=16
CED=AEB
CED=5x-3
subsitute
CED=5(16)-3
CED=80-3
CED=77
CED=77=AEB
answer is 77 degreees