Question

1.Oblicz a) (3 i 2/3 - 1/3)*5= b) 1/4*2/5+3= c)4*2 1/2-6 2/3:5/6 2.Rozwiąż równania a) 3/8*x=9 b) x*(2 1/6 +3 1/4)=4 1/3

Na dzisiaj plis !!!!!

Answer 1

1.Oblicz

a) (3 i 2/3 - 1/3)*5=3 1/3*5=10/3*5=50/3=16 2/3

b) 1/4*2/5+3=1/10+3=3 1/10

c)4*2 1/2-6 2/3:5/6=4*5/2-20/3*6/5=10-8=2                                 

 2.Rozwiąż równania

a) 3/8*x=9

x=9:3/8

x=9*8/3

x=24

b) x*(2 1/6 +3 1/4)=4 1/3

x*(2 2/12+3 3/12)= 4 1/3

x*5 5/12=4 1/3

x*65/12=13/3

x=13/3:65/12

x=13/3*12/65

x=4/5

 

Answer 2

1 a

3 i 1/3 * 5=50/3 =16 i 2/3

b 2/20+3=3,1

c10-20/3:5/6=10-12=-2

 

2

a) x=9:3/8

x=9*8/3

x=24

b) x*(2i2/12+3i3/12)=4i4/12

x*5i5/12=4i4/12

x=4i4/12:5i5/12

x=52/12:65/12

x=52/12 * 12/65

x=52/65

x=4/5

 

:)