Question

matematyka ;)

1.a. 2 1/4 razy 5 6/7 =

b.3/7 podziel przez 1/12 =

c.14/15+3/30=

d.17/6-4/18=

2.a.1 1/5 razy 1 2/3 razy 1/7+(1 /7 + 1/7)=

b. 2 1/6 - 2/3 - 2/3)-2 1/5 =

c.10-2 razy (3 1/5 - 2 1/4 razy 1/3)=

d. (7/3- 5/12+ 1 1/2) podziel przez (2 3/4 - 5/6)=

Answer 1

1

a) 21/4 * 56/7 = 3/1*14/1=42/1=42

b)3/7:1/12=3/7:12/1=36/7=5 i 1/7

c)14/15+3/30=28/30+3/30=31/30=1 i 1/30

d)17/6-4/18=2 i 5/6 -4/18=2 i 15/18 - 4/18=2 i 11/18

Sorry czasu już nie mam bo pedze na trening ;**

Answer 2

a) 9/4 * 41/7 =369/28 = 13 5/28

b) 3/7 * 12 = 36/7 = 5 1/7

c) 28/30 + 3/30 = 31/30 = 1 1/30

d) 51/18 - 4/18 = 47/18 = 2 11/18

2.

a) 6/5 * 5/3 * 1/7 + 2/7 = 30/15 * 1/7 + 2/7 = 30/105 + 2/7 = 30/105 + 30/105 = 60/105

b) 13/6 - 11/5 = 65/30 - 66/30 = - 1/30

c) 8 * ( 16/5 - 9/4 * 1/3) = 8 * ( 16/5 - 9/12) = 8 * ( 192/60 - 45/60) = 8 * 147/60 = 19.6

d) (28/12 - 5/12 + 18/12 ) / ( 11/4 - 5/6 ) = 41/12 / ( 33/12 - 10/12) = 41/12 / 23/12 = 41/12 * 12/23 = 41/23 = 1 8/23