Question

Exercitiu 4  va rog ajutati-ma  dau 81 de puncte

Answer 1

a) 33/7 * (120/33 + 35/33 - 1/33) = 33/7 * 154/33 = 22
b) (420/63 +81/63 - 105/63) * 63/132 = 396/63 * 63/132 = 3
c) (28/84 -1/3) * (10/24 + 9/24) * 36 = (28/84 - 28/84) * 19/24 * 36 = 0
d) 7/2 * (35/77 + 11/77) * (8/2 + 3/2) = 7/2 * 46/77 * 11/2 = 77/4 * 46/77 = 23/2 = 11 si 1/2
e) 7/2 * (9/21 + 7/21) * (10/5 + 2/5) = 7/2 * 16/21 * 12/5 =  84/10 * 16/21 = 42/5 * 16/21 = 32/5 = 6 si 2/5
f) (5/15 + 6/15) * (56/22 - 11/22) * (10/12 - 6/12) = 11/15 * 45/22 * 4/12 = 44/180 * 45/22 = 11/45 * 45/22 = 1/2

Answer 2

a)33/7*(40/11+35/33-1/33)= 33/7 * (120/33 + 35/33 - 1/33) = 33/7 * 154/33 =154/7= 22

b) (20/3+9/7-15/9)*63/132=(420/63 +81/63 - 105/63) * 63/132 = 396/63 * 63/132 =396/132= 3

c)(4/7*7/12-1/3)*(5/12+3/18)= (28/84 -1/3) * (10/24 + 9/24) * 36 = (28/84 - 28/84) * 19/24 * 36 = 0* 19/24 * 36 = 0

d) (3+1/2)*(5/11+1/7)*(4+3/2)=(6/2+1/2) * (35/77 + 11/77) * (8/2 + 3/2) = 7/2 * 46/77 * 11/2 = 77/4 * 46/77 = 4/64=23/2

e) (3+1/2)*(3/7+1/3)*(2+2/5)=(6/2+1/2 )* (9/21 + 7/21) * (10/5 + 2/5) = 7/2 * 16/21 * 12/5 =  84/10 * 16/21 =4*8/5= 32/5

f) (1/3+2/5)*(28/11-1/2)*(5/6-1/2)=(5/15 + 6/15) * (56/22 - 11/22) * (10/12 - 6/12) = 11/15 * 45/22 * 4/12 = 44/180 * 45/22 = 11/45 * 45/22 = 1/2