SEGUNDA TAREA 1ª5 T.MAT ALGEBRA

1.- ((3/5)/(16/9)(-2) + 12(-2) -36 = 2427/40
(27/80)(-2/1)+(-24)-36
(-54/80)+(-60)
(-54/80)+(-60/1)=-54+(-4800)/80=-4854/80=2427/40

((3/5)/(16/9)(2) + 12(2) -36 =-453/40
(27/80)(2/1)+(-24)-36=
(-54/80)+(-12)=
(-54/80)+(12/1)=54+(-960)/80=-906/80=-453/40

2.- 13(-3) - 35 +2/7 -15/8 = -4289/56
-39-35 + 2/7 -15/8 =
-74 +2/7 -15/8 =
2/7 -15/8 = 16 - 105/56= -89/56
-74/1 + -89/56= -4200+(-89)/56= -4289/56

13(3) - 35 +2/7 -15/8 =79/56
39 - 35 + 2/7 - 15/8
4+ 2/7 - 15/8
2/7 -15/8 = 16 - 105/56= -89/56
3/1 + -89/56= 168+(-89)/56= 79/56

3.- 21(-4) -16(-4)-18 +23 -65 +79 -45(-4) = 179
-84+64-18+23-65+79+180
-20-18+23-65+79+180
-38+23-65+79+180
-15-65+79+180
-80+79+180
-1+180
179

21(5) -16(5)-18 +23 -65 +79 -45(5) = -181
105-80-18+23-65+79-225
25-18+23-65+79-225
7+23-65+79-225
30-65+79-225
-35+79-225
44-225
-181

4.- ((9/8)(7/14)/(23/6))-6 +(1/5)-6 -19 = -11444/1280
(63/112)/(23/6)= (378/256)(6/1)=2268/256 + (1/5)(6/1)-19
2268/256 + 6/5= 11340+1536/1280= 12876/1280 - 19/1= 12876-24320/1280=-11444/1280

((9/8)(7/14)/(23/6))3 +(1/5)3 -19 = -17882/1280
(63/112)/(23/6)= (378/256)(3/1)=1134/256 + (1/5)(3/1)-19
1134/256 +3/5= 5670+768/1280=6438/1280 -19/1=6438-24320/120=-17882/1280

5.- (23/4)(65/6) + (2/3)5 -16/5)5 +22 =
1495/24 + (10/3 - 16/5)(5)+22
10/3 - 16/5=50-48/15=(2/15)(5/1)=10/15
1495/24 + 10/15=22425+240/15=22665/15
(22665/15)(5/1)= 113325/15 + 22/1= 113325 + 330/15= 113655/15

(23/4)(65/6) + (2/3)-7 -16/5)-7 +22 = -130773/15
1495/24 + (14/3 - 16/5)(-7)+22
14/3 - 16/5= 70-48/15=(22/15)(-7/1)=-154/15+22
1495+ -154/15= 22425+ (-3696)/15 = (18729/15)(-7/1)+22
(18729/15)(-7/1)= -131103/15 + 22/1= -131103+330/15= -130773/15