Step-by-step explanation:
a+3=−3
a=-6
!!!!!!!!!!!!!
Answer:
31
Step-by-step explanation:
Answer:

Step-by-step explanation:
Quadratic formula:
when the equation is 
The given equation is
. Let's first arrange this so its format looks like
:


Subtract 1 from both sides of the equation

Now, we can easily identify 3 as a, -2 as b and 0 as c. Plug these into the quadratic formula:

I hope this helps!
It would be 82 2/3 since 1/3 minis 2/3 would equal -1/3 you subtract that from 83 and get 82 2/3
Since, the co-interior angles(55° and 125°) are supplementary(sum is 180), therefore the lines are parallel.