Question

prosze o rozwiazania z obliczeniami i EWENTUALNIE wyjaśnieniem

×=znak mnozenia

/=znak dzielenia

6¾+⅞+5½=

7⅖+3¾-5,7=

2⅝×1⅓=

4⅚/1⅕=

2²/₁₆×3⅕×2½=

⁶⁰/4⅘=

5⅚/5,25x13,5=

(1⅗+2,2)/6⅓=

13,27-1,25+9,39=

(2⅓-1,6)/(1,25x0,88)

Answer 1

6¾+⅞+5½= musisz sprowadzić do wspolnego mianownika = 6 3/4+ 14/4 + 5 2/4=

= 11 19/4= 15 3/4  lub

6¾+⅞+5½= 27/4+ 7/2+11/2= 27/4+ 14/4+ 22/4= 63/4=15 3/4

 

7⅖+3¾-5,7= 37/5+ 15/4 - 5 7/10= 37/3+ 15/4- 57/10= 223/20 - 114/20=

= 109/20 = 5 9/20

 

2 5/2 x 1 1/2 = 9/2 x 3/2 = 27/4 = 6 3/4

 

4 5/6 : 1 1/2 = 29/6 : 6/5 = 29/6 x 5/6 = 145/36 = 145/36 = 4 1/4

 

2 2/16 x 3 1/5 * 2 1/2 = 34/16 x 16/5* 5/2 = 34/1 x 1/5 = 34/5* 5/2 = 17/1* 1/1= 17/1 = 17

 

 60 : 4 4/2 = 60/1 : 24/5 = 60/1 x 5/24 = 300/24 = 25/2 = 12 1/2

 

5⅚/5,25x13,5=35/6 : 525/100* 135/10=

=10/9 x 135/10 = 1/1 x 15/1 = 15/1 = 15 0/1

 

(1⅗+2,2)/6⅓=  ( 8/5+ 22/10) : 19/3= ( 16/10 + 22/10) * 3/19= 38/10* 3/19=

= 114/190= 3/5

 

13,27-1,25+9,39=12,02+9,39=21,41

 

(2⅓-1,6)/(1,25x0,88)= ( 7/3- 16/10): (125/100* 88/100)=

= (70/30 - 48/30) :( 5/25*22/4)= 11/15 : 11/10= 11/15* 10/11= 110/165= =2/3