Question

if p/q= -4/9 , q= 2/3 and r= -8/11 then verify = p * (q + x ) = p*q + p*r

Answer 1

Answer:

Therefore, if not r, then not p or not q.” ... if p⇔q is a tautology. ... Use truth tables to verify the following equivalent ... Compare this to addition of real numbers: x+y= y+x.