Question

if p=8 upon 9 and q =-7 upon 12

p+q=q+p
solve

Answer 1

Hy,
P=8/9
Q=-7/12
Taking LHS,
P+q
=8/9 + (-7/12)
Implies 32-21/36=11/36
Taking RHS,
q+p
=-7/12+8/9
=-21+32/36=11/36
Implies LHS=RHS
Hope it helps.
Thanks