Question

1)Puterea a doua la (10,1) - 5.454 - (14.8 - 7.3 x 2.02) 2)0.875- 0.7) : (5 intreg si 2 pe 7 + 3 intreg si 15 pe 28) 3)[(1 pe 4 - 0.1 : 2) x 5 pe 13 + 1 : (3 pe 4 + 1 pe 3)

Answer 1

   (10,1)^2 - 5,454 - (14,8 - 7,3 x 2,02) = 
= (101/10)^2 - 5454/1000 - (148/10 - 73/10 x 202/100) = 
= 10201/100 - 5454/1000 - (148/10 - 14746/1000) = 
= 102010/1000 - 5454/1000 - (14800/1000 - 14746/1000) =
= 96556/1000 - 54/1000 = 96502/1000 = 96,502

(0,875 - 0,7):(5 si 2/7 + 3 si 15/28) = (875/1000 - 7/10) : (37/7 + 99/28) = (875/1000-700/1000) : (148/28 + 99/28) = 175/1000 : 247/28 = 175/1000 x 28/247 = 4900/247000 = 49/2470

(1/4 - 0,1:2) x 5/13 + 1 : (3/4 + 1/3) = (1/4 - 1/10 x 1/2) x 5/13 + 1 : (9/12 + 4/12) = (1/4 - 1/20) x 5/13 + 1 : 13/12 = (5/20 - 1/20) x 5/13 + 1 x 12/13 = 4/20 x 5/13 + 12/13 = 1/5 x 5/13 + 12/13 = 1/13 + 12/13 = 13/13 = 1

Answer 2

1)  
(10,1)² - 5,454 - (14,8 - 7,3 x 2,02) = 
102,01 - 5,454 - (14,8 - 14,746) = 
102,01 - 5,454 - 0,054 = 
96,502 
2) 
(0.875- 0.7) : (5 intreg si 2/7 + 3 intreg si 15/ 28) =
0,175 : ( 37/7 +99/28) =
0,175 : (148+99)/28 = 
0,175 : 247/28 = 
7/40 x 28/247 = 
196/9880 =
49/2470 
3)
(1 / 4 - 0.1 : 2) x 5 /13 + 1 : (3 /4 + 1 / 3)=
(1/4 - 1/20) x 5/13 + 1 : (9/12 + 4/12) = 
4/20 x 5/13 + 1 : 13/12 = 
1/13 + 12/13 = 
13/13 = 
1