Question

verify the following

Answer 1

as we know,

a+(b+c)=(a+b)+c

so the equation is verified.

mark this answer brainliest.

Answer 2

-1+-12-9/12=-3-2/3+3/4
-1-21/12=-5/3+3/4
-12-21/12=20+12/12
-32/12=32/12
h/p