Question

oblicz

(2/7 + 1/3 ) * 0,2 =

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

2

(1/5) + 6,5 - 2 1/5 =

(2,4 - 1 1/5 ) * 2/7 =

Answer 1

oblicz

 (2/7 + 1/3 ) * 0,2 = (6/21+7/21)*2/10=13/21*2/10=26/210

 

4 1/4 -1/3 * 2/5 = 17/4-2/15=255/60-8/60=247/60=4 7/60 

 

(1/5)     + 6,5 - 2  1/5 =2/10+6 5/10- 2 2/10= 4 5/10= 4,5

 

(2,4 - 1 1/5 ) * 2/7 = (2 4/10 -1 2/10) *2/7= 1 2/10*2/7= 12/35

Answer 2

(2/7+1/3)*0,2=(6/21+7/21)*0,2=13/21*0,2=13/21*2/10=26/210=13/105

4 1/4 - 1/3 *2/5=17/4-1/3*2/5=17/4-2/15=255/60-8/60=247/60=4 7/60 =4,116

(1/5)+6,5-2 1/5=2/10+65/10-22/10= 45/10=9/2=4,5

(2,4-1 1/5)* 2/7=(24/10-12/10)*2/7=12/10*2/7=24/70=12/35