Question

3/6 plus (-5/6) -(-7/12)

Answer 1

3/6-5/6+7/12=
Amplificam primele 2 fractii cu 2.
=6/12-10/12+7/12=
=3/12
=1/4

Answer 2

3/6+(-5/6)-(-7/12) = (-2/6)+7/12 = 7/12-1/3 =
=(7-4)/12 = 3/12 = 1/4