Question

3 supra 8 +(-5 supra 6)-(-7supra 12)

Answer 1

3/8 - 5/6 + 7/12=
9/24 - 20/24 +14/24=
3/24=1/8

Answer 2

3/8-5/6+7/12 amplificam3/8 cu 3 amplificam 5/4 cu 4 amplificam7/12 cu 2 9/24-20/24+14/24= -11/24+14/24 -25/24 sper ca e corect