Question

answer the question ​

Answer 1

Answer:

Step-by-step explanation:

Q2) given that p=5/6,q=-7/6,r=13/16

given (p + q)+r=p+(q + r)

consider LHS of the equation

=(p + q)+r

=(5/6-7/6)+13/16

=-2/6+13/6

=-1/3+13/6

=(-6+39)/18

=-33/18=-11/6

now consider RHS    

=p+(q + r)

=-5/6+(-7/6+13/16)

=-5/6+(-112+78)/96

=-5/6-34/96

=-5/6-17/48=(-2640-102)/4608=457/768

LHS not equal to RHS so they are not equal

question 3:

by solving LHS we get -47/66  and by solving RHS -47/66

as LHS=RHS we can say it proved