Answer:
I am sorry, but that is not a question, if you ask a question about multiplying fractions then I will be happy to answer your question
About one standard ruler is the ESTIMATED length of a piece of paper.
Answer:
p - 5q = 4qr where
q = 4 and r = -1 by applying these value
p - 5(4) = 4(4)(-1)
p - 20 = -16
p = -16 + 20
p = 4
