Question

2/3 * 0,75 = 0,6 * 2[1/3] = 12,4 : 2/3 = 3[5/8] : 1[1/2] = 4,5 * 2/9 + 1[1/3] : 0,75 = ( 5[4/5 + 1,4] * (3[75/25 - 5,375) = 10[5/12] - 3[1/6] - 1[2/3] + 5,375) = (0,5 + 2/7) * 7/11 = ZNACZENIE ( , ) - nawias [ - i

Answer 1

2/3 * 0,75 =2/3*3/4=1/2

 

0,6 * 2[1/3] =6/10*7/3=14/10=1 4/10=1 2/5

 

12,4 : 2/3 =124/10:2/3=124/10*3/2=186/10=18 6/10=18 3/5

 

3[5/8] : 1[1/2] =29/8:3/2=29/8*2/3=29/12=2 5/12

 

4,5 * 2/9 + 1[1/3] : 0,75 =45/10*2/9+4/3:3/4=

=1+4/3*4/3=1+16/9=1 +1 7/9=2 7/9

 

( 5[4/5 + 1,4] * (3[75/25 - 5,375) =(5,8+1,4)*(6-5,375)=

=7,2*0,625=4,5

 

10[5/12] - 3[1/6] - (1[2/3] + 5,375) =10 5/12-3 2/12-(1 2/3+5 3/8)=

=7 3/12-(1 16/24+5 9/24)=7 3/12-6 25/24=7 6/24-7 1/24=5/24

- sprawdź ten przykład,bo nie zaznaczyłeś nawiasu i nie wiem,czy tak ma być,jak coś,to pisz,poprawię go

 

(0,5 + 2/7) * 7/11 =(1/2+2/7)*7/11=(7/14+4/14)*7/11=

=11/14*7/11=1/2

 

Answer 2

2/3 * 0,75 = 2/3 * 3/4 = 6/12 = 1/2

 

0,75 = 75/100 = 3/4

 

 

0,6 *2i1/3 = 6/10 * 7/3 = 2/10 * 7/1 = 14*10 = 1 i4/10 = 1i2/5

 

12,4 : 2/3 = 12i2/5 : 2/3 = 62/5 * 3/2 = 31/5 * 3/1 = 93/5= 18i3/5

 

3i5/8 : 1i1/2 = 29/8 : 3/2 = 29/8 * 2/3 = 29/4 * 1/3 = 29/12 = 2 i5/12

 

4,5 *2/9 +1i1/3 :0,75 = 4i1/2 * 2/9 + 4/3 : 3/4 = 9/2 * 2/9 + 4/3 * 4/3 = 1/1 *1/1 + 16/9 =

= 1 + 1i7/9 = 2 i7/9

 

(5i4/5 +1,4) * (3 i75/25 - 5,375) = ( 5i4/5 + 1i2/5) * ( 6 -5,375) = 6i6/5 * 0,625 =

= 36/5 * 5/8 = 9/1 * 1/2 = 9/2  = 4 i1/2

 

0,625 = 625/1000 = 5/8  

 

10i5/12 - 3i1/6 - (1i2/3 + 5,375 ) =

10i5/12 - 3i2/12 - (1i 2/3  + 5 i3/8) = 

7 i3/12 -(1i16/24 + 5i9/24) = 

7 i3/12 - 6i25/24= 7 i3/12- 7i1/24 = 7 i6/24 - 7 i1/24 = 5/24

 

 5,375 = 5 i3/8  ( 0,375 = 375/1000 = 3/8)

 

(0,5 + 2/7) * 7/11 = (1/2 + 2/7) *7/11=( 7/14 +4/14) *7/11= 11/14 *7/11= 1/2 * 1/1 = 1/2