mi primera tarea 1-4

resulatdos de la tarea:
1.- 3+4=7 +5=12 -6=6 -7=-1 -4=-5 +7=2 -4=-2 +9=7 el resulatdo es:7
2.- -6+4=-2 -6=-8 +2=-6 -9=-15 -8=-23 +2=-21 +3=-18 +6=-12 -8=-20 -12=-32 -43=-75 +67=-8 el resultado es:-8
3.- (2)(-12)=-24 (3)=-72 (3)=-216 (-2)=432 (1)=432 (3)=1296 el resultado es:1296
4.- (-2)(3)=-6 (1)=-6 (-4)=24 (5)=120 (6)=720 (-7)=-5040 (-8)=40320 el resultado es:40320
5.- -4+5=1 -6=-5 +7=2 -8=-6 +9=3 -12=-9 +24=15 -33=-18 (2)=-36 (-3)=108 (4)=432 (5)=2160 el resulatdo es 2160

numeros racionales:

6.- (3/4)+(5/9)=
7.- (6/2)-14/4)=
8.-(3/5)(12/3)-(4/7)(6/11)=(3/5)(12/3)=36/15 (4/7)(6/11)=24/44=6/11 36/15-6/11=396 -90/165=306/165 el resultado es:306/165
9.-(((4/3)(6/2)/(4/4)))+(2/5)+3/4-16/7=(4/3)(6/2)=24/6=8/2=4/1/(4/4)=16/4=8/2=4/1+(2/5)=20+2/5=22/5+3/4=88+15/20=103/20-16/7=721-320/140=401/140 el resultado es: 401/140
10.-(18/5)(9/2)+25/3-6/4-7/15=(18/5)(9/2)=162/10=81/5+25/3=243+125/15=368/15-6/4=1472-90/60=1382/60-7/15=20730-420/900=20310/900=6770/300=3385/150=677/30 el resultado es:677/30
11.-(14/3)/(23/11)+9/6(5/4)=(14/3)/(23/11)=154/69+9/6=160+621/414=781/414(5/4)=3905/1656 el resulatdo es:3905/4656
12.-(((5/25)(16/2)/(25/7)(13/6))/(12/7)+3/2= (5/25)(16/2)=80/50=40/25/(25/7)=280/625=56/125(13/6)=128/750/(12/7)=5096/9000=2548/4500=1274/2250=637/1125+3/2=1274+3375/2250=4649/2250 el resultado es:4649/2250