Question

va rog frumos coroană​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

1,(6)= (16-1)/9=15⁽³/9⁽³=5/3

4,1(6)= (416-41)/90=375⁽⁵/90 ⁽⁵= 75⁽³/18⁽³=25/6

-

= 5/3*(2,5 -3,75:25/6)

= 5/3*(2,5- 375⁽²⁵/100⁽²*6⁽²/25⁽²⁵)

= 5/3*( 2,5 -45/50)

= 5/3*(⁵⁾25/10-45/50)

= 5/3*(125/50-45/50)

= 5/3*80/50

=400⁽¹⁰/150⁽¹⁰

=40⁽⁵/15⁽⁵

=8/3

-

c)

0,8(3)= (83-8)/90=75⁽⁵/90⁽⁵=15⁽³/18⁽³=5/6

0,(3)= 3⁽³/9⁽³=1/3

-

=(5⁽⁵/6⁽³*75⁽³/100⁽⁵-1/3):35/10

=(³⁾5/8-⁸⁾1/3):35/10

=(15/24-8/24):35/10

=7/24:35/10

=7⁽⁷/24⁽²*10⁽²/35⁽⁷

=5⁽⁵/60⁽⁵

=1/12