When you add 8 and 5 the sum will be 13. On the other hand when you add 6 and 7 the sum will be 13. That's why it's equal to 13.
13
8 multiplied by 13 is 104.
(13-2y)/8
-8
Since 8 does not equal 13 - 4the equation (8 = 13 - 4) is false and so (8 = 13 - 4) = 0
8
-8 - (-13) = - 8 + 13 = +5 ( minus a minus is a plus)
8/13
13
When you add 8 and 5 the sum will be 13. On the other hand when you add 6 and 7 the sum will be 13. That's why it's equal to 13.
-5
-5--3=8 That's (-)by(-)=+ ie -5+13=8
13
-8
Yes, a redshift of 8 does equal to a light travel distance of 13 billion years.
43/4 - 13/8 = 46/8 - 13/8 = 33/8