Question

a) 2 i 1/3 * a = 0,7

b) 2,7 : y = 1 i 3/4 - 0,85

c) 8 i 1/3 - 0, 250 =

Answer 1

a)

2 1/3a=0,7

7/3a=7/10

a=7/10:7/3=7/10*3/7=21/70=3/10

a=3/10

 

b)

2,7:y=1 3/4-0,85

27/10:y=7/4-85/100

27/10:y=7/4-17/20

27/10:y=35/20-17/20

27/10:y=18/20

27/10=18/20y

y=27/10:18/20=27/10*20/18=540/180=54/18=3

y=3

 

c)

8 1/3-0,250=8 1/3-0,25=25/3-25/100=25/3-1/4=100/12-3/12=97/12