Question

Can you help?
Find a
at+b=ar-c

Answer 1

Turing to the Rescue!!

Answer 2

at-ar=-c-b
a(t-r)=-(c+b)
a=(c+b)/(r-t)

Answer 3

or -(c+b)/(t-r)
whichever you prefer

Answer 4

How did you do the first step?

Answer 5

subtracted ar and b from both sides,
it's really two steps I guess...

Answer 6

Okay :D I see... And then you undistributed.. Thank you so much!

Answer 7

anytime