Question

Oblicz:
a) 15 x 2/3 =
b) 6/7 x 21 =
c) 4 x 3 3/5 =
d) 5 1/6 x 12 =
e) 2/9 x 3/22 =
f) 1/18 x ( - 9/10 ) =
g) - 1 2/3 x 3 3/4 =
h) - 2 4/5 x ( - 4 2/7 ) =
i) 16 : 8/9 =
j) 8/9 : 16 =
k) 9/25 : (- 3/50) =
l) - 2 7/8 : ( - 5 3/4) =

Prosze o pomoc dzieki

Answer 1

A) 15 x 2/3 = 30/3 = 10
b) 6/7 x 21 = 126/7 = 18
c) 4 x 3 3/5 = 4 x 18/5 = 72/5 = 14 2/5
d) 5 1/6 x 12 = 31/6 x 12 = 372/6 = 62
e) 2/9 x 3/22 = 1/33
f) 1/18 x (-9/10) = (- 1/20)
g) - 1 2/3 x 3 3/4 = - 5/3 x 15/4 = - 25/4 
h) - 2 4/5 x (- 4 2/7) = - 14/5 x (- 30/7) = 12/1 = 12
i) 16 : 8/9 = 16/1 : 8/9 = 16/1 x 9/8 = 18/1 = 18
j) 8/9 : 16 = 8/9 : 16/1 = 8/9 x 1/16 = 1/18
k) 9/25 : (- 3/50) = 9/25 x 50/3 = 6/1 = 6
l) - 2 7/8 : (- 5 3/4) = - 23/8 : (- 23/4) =  - 23/8 x 4/23 = - 1/2

mam nadzieję, że pomogłam :)