Question

a) (-5 supra 12) -[(-1supra2)+(+3supra4)-(-1supra6)].
b) (-7supra36) +[(- 2supra9)+(-5supra18)-(+1supra2)].
c) (-8supra9)-[-5supra72-(-1supra12)+(-11supra36)].
Dau corontia!!!

Answer 1

a) =-5/12+1/2-3/4-1/6=
=(-5+1x6-3x3-1x2)/12
=(-5+6-9-2)/12=-10/12=-5/6

b)=-7/36-2/9-5/18-1/2
=(-7-2x4-5x2-1x18)/36
=(-7-8-10-18)/36=-43/36

c)=-8/9+5/72-1/12+11/36
=(-8x8+5-1x6+11x2)/72
=(-64+5-6+22)/72=-43/72