3О баллов.

Здраствуйте. Помогите решить эти задания.

2 11/12-3 3/4=2 11/12-3 9/12=2 11/12-2 21/12=-10/12=5/63,08-5,48=-2,4-1,8+2 5/6=-1 4/5+2 5/6=-1 24/30+2 25/30=1 1/30-4 7/9-6 2/3=-4 14/18-6 12/18=-10 26/18=-11 8/18=-11 4/9-1 1/10+3 1/7=-1 7/70+3 10/70=2 3/705 2/3-(-4 2/5)=5 2/3+4 2/5=5 10/15+4 6/15=9 16/15=10 1/15-3 7/16+5/48=-3 21/48+5/48=-3 16/48=-3 1/3-4,05-(-2,4)=-4,05+2,4=-1,657,25-3,65=3,67-(-(-7)+(-3))-(-(-5)-1-(-8)=7-7-4-5-1+8=-2-4-(-2)-(-5-(-7)+(-3)-(-8)=-4+2-(-5+7)-3+8=-2+5-7-3+8=1-3,28+(-5,62)-(-9)-3,8+0,49=-3,28-5,62+9-3,8+0,49=-3,2127*(-6)=-162-67*(-15)=1005-15*0,87=-13,051/2*5/3=5/6-10/7*(-5/6)=50/42=1 8/42=1 4/216/7*(-1/2)=-3/7-5*(-62)=310169*243=39609-16,9*3,02=-51,038-10/3*(-3/4)=2,5-15/4*(-4/5)=35/14*7/15=5/30=1/642*(-10)=-42032,5*(-4,3)=-139,75-1,01*(-0,02)=0,02025/2*(-11/5)==-5,5-21/4*(-7/3)=49/4=12 1/4-7/16*4/21=-1/12