Question

make p the subject of the formula rp+5=3p+8r

Answer 1

Thanks for asking the question.
Given equation is:
rp + 5 = 3p + 8r
Now, moving 3p to the left side, we get,
rp - 3p + 5 = 8r
Similarly moving 5 to the right side, we get,
rp - 3p = 8r - 5
taking ''p'' common in right hand side, we get,
p (r - 3) = 8r - 5
p = 8r - 5/ r - 3 (required answer)
Hope it helps.