Question

1 1/7 + 3/5 = 2 3/4 +1 2/3 = 4 3/4 - 1 2/5 5 1/4 - 3 1/2 15* 5 1/3 = 2 1/3 *1 5/7 = 6 1/4 : 15 = 4 2/7 : 2 2/9 W miejsca = prosze o podanie odpowiedzi a po = to sa kolejne zadania

Answer 1

1 i 1/7 + 3/5 =

= 1 i 5/35 + 21/35=

= 1 i 26/35



2 i 3/4 +1 i 2/3 =

= 2 i 9/12 + 1 i 8/12=

= 3 i 17/12=

= 4 i 5/12



4 i 3/4 - 1 i 2/5 =

= 4 i 15/20 - 1 i 8/20=

= 3 i 7/20




5 i 1/4 - 3 i 1/2 =

= 5 i 1/4 - 3 i 2/4=

= 4 i 5/4 - 3 i 2/4=

= 1 i 3/4




15* 5 i 1/3 =

= 15 * 16/3=  ( skracam ułamki)

= 5 * 16/1=

= 80/1=

= 80




2 i 1/3 *1 i 5/7 =

= 7/3 * 12/7= (skracam ułamki)

= 1/1 * 4/1=

= 4/1=

= 4






6 i 1/4 : 15 =

= 25/4 * 1/15= (skracam ułamki)

= 5/4 * 1/3=

= 5/12




4 i 2/7 : 2 i 2/9=

= 30/7 : 20/9 =

= 30/7 * 9/20 =  ( skracam ułamki)

= 3/7 * 9/2=

= 27/14=

= 1 i 13/14