Question

De la punctul D la punctul I.
Dau coronița si MULTE PUNCTE.

Answer 1

d) nu se vede la prima paranteza daca e 1/6 sau 7/6
nici altele nu se vad prea bine la ult paranteza

parca e 7/6 il fac asa, ca se simplifica

 (3/12+14/12)*15/34 +3/2(7/21-1/21)=
17/12*15/34+3/2*6/21=
5/8+3/7=
35/56+24/56=59/56
cam urat, nu garantez

 



e)12,9+12,6=25,5 ..nu ai calculator?

f) (0,25)^(7+14) :(0,25)^19 +0,125=
 (0,25)^(21-19) +0,125=
0,25^2 +0,125= 0,525+0,125=0,750=0,75
h

h)(1/3+1/4-1/6):2,5=
  ( 4/12+3/12-2/12):5/2=
5/12:5/2= 5/12*2/5=2/12=1/6 = 0,1(6)

i) 6+11/5:(8/3-6/5) +1:[(35/21+3/21-2/21)*1/6]=
  6+11/5:(40/15-18/15) +1:[36/21*1/6]=
6+11/5:22/15 +1: 6/21
6+11/5*15/22 +1:2/7
6+3/2+1*7/2=
6+3/2+7/2=
6+10/2=
6+5=
11