Question

DAU 20 DE PUNCTE ȘI COROANĂ! VĂ ROG MULT! !

Answer 1

Răspuns:

a) 30:1/10*(1-1/3)=30*10*2/3=300*2/3=200

b) (3:2/0,(6)+3)*4=(3:2/2:3+3)*4=(3:6+3)*4=(1/2+3)*4=7/3*4=28/3

c) 3/4*(8/9-1/6):5/4=3/4*(16/18-3/18)*4/5=2/5*13/18=13/45

d) 1/4*(1,5+0,(3):2)=1/4*(1,5+1/6)=1/4*(3/2+1/6)=1/4*10/6=5/12

e) [1/4+(2,5-7/4):7/8]*14=[1/4+3/4*8/7]*14=(1/4+6/7)*14=(7/28+24/28)*14=

=31/28*14=31/2

f) [3,5+(5+1/6)-13/3]:11/3*2/5=[7/2+31/6-13/3]*3/11*2/5=26/6*6/55=26/55

Sper ca nu am gresit nicaieri...