Oblicz wartość wyrażeń.
Od c) do j). Przykłady w załączeniu. Bardzo proszę o pomoc!
c) (3,6 -1,8 *1i1/3) : 0,4 = ( 3i3/5 - 1i4/5 * 4/3): 0,4= (18/5 -9/5 *4/3) :0,4=
= (18/5 -3/5 *4/1) : 0,4= (18/5-12/5) : 2/5 = 6/5 * 5/2 = 3/1 * 1/1 = 3
d) (1,2 : 3/5 -1i1/3 *0,3) : 1i1/7 = ( 6/5 * 5/3 -4/3 * 3/10) : 8/7= = (2/1 *1/1 - 2/1 *1/5): 8/7= (2- 2/5) :8/7= 1i3/5 :8/7= 8/5 *7/8= = 1/5 * 7/1 = 7/5 = 1 i2/5
e) (2,5 -1,5 *1i1/3) *2i2/3= (2,5 -1i1/2 * 4/3) *8/3=(2,5 -3/2 *4/3) *8/3= = (2,5 -1/1 *2/1)* 8/3 = (2i1/2 -2 ) *8/3= 1/2 * 8/3 = 8/6= 1i2/6= 1i1/3
f) (0,76 :4/5 - 0,5) : (17/40 -0,2 :1i3/5) = (0,76 :0,8 -0,5) :(0,425 -0,2 :1,6) = = (0,95 -0,5) : (0,425 -0,125)= 0,45 : 0,3 = 4,5 3 = 1,5
g) 5,2 - 1,2 *1i2/3
_______________ =
6i1/2 -2,1 : 8,4
5,2 - 1i1/5 *5/3
________________ =
6,5 - 0,25
5,2 - 6/5 *5/3
________________=
6,25
5,2 - 2/1 *1/1
5,2 - 2
________ = 3,2 : 6,25 = 320 : 625 = 0,512
h) 9 :1,5 -(2,7 *1/9 -3/20 *2)* 2,25
_____________________________ =
6 : 2i1/9
6 -( 27/10 *1/9 - 3/10 * 1) *2,25
_______________________________ =
6 : 19/9
6 -( 3/10 *1/1 - 3/10 ) * 2,25
____________________________ =
6 * 9/19
6 -(3/10 -3/10) * 2,25
______________________ =
54/19
6 - 0 * 2,25
____________ = 6 : 54/19 = 6 * 19/54 = 1 * 19/9 = 2 i 1/9
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c) (3,6 -1,8 *1i1/3) : 0,4 = ( 3i3/5 - 1i4/5 * 4/3): 0,4= (18/5 -9/5 *4/3) :0,4=
= (18/5 -3/5 *4/1) : 0,4= (18/5-12/5) : 2/5 = 6/5 * 5/2 = 3/1 * 1/1 = 3
d) (1,2 : 3/5 -1i1/3 *0,3) : 1i1/7 = ( 6/5 * 5/3 -4/3 * 3/10) : 8/7= = (2/1 *1/1 - 2/1 *1/5): 8/7= (2- 2/5) :8/7= 1i3/5 :8/7= 8/5 *7/8= = 1/5 * 7/1 = 7/5 = 1 i2/5
e) (2,5 -1,5 *1i1/3) *2i2/3= (2,5 -1i1/2 * 4/3) *8/3=(2,5 -3/2 *4/3) *8/3= = (2,5 -1/1 *2/1)* 8/3 = (2i1/2 -2 ) *8/3= 1/2 * 8/3 = 8/6= 1i2/6= 1i1/3
f) (0,76 :4/5 - 0,5) : (17/40 -0,2 :1i3/5) = (0,76 :0,8 -0,5) :(0,425 -0,2 :1,6) = = (0,95 -0,5) : (0,425 -0,125)= 0,45 : 0,3 = 4,5 3 = 1,5
g) 5,2 - 1,2 *1i2/3
_______________ =
6i1/2 -2,1 : 8,4
5,2 - 1i1/5 *5/3
________________ =
6,5 - 0,25
5,2 - 6/5 *5/3
________________=
6,25
5,2 - 2/1 *1/1
________________ =
6,25
5,2 - 2
________ = 3,2 : 6,25 = 320 : 625 = 0,512
6,25
h) 9 :1,5 -(2,7 *1/9 -3/20 *2)* 2,25
_____________________________ =
6 : 2i1/9
6 -( 27/10 *1/9 - 3/10 * 1) *2,25
_______________________________ =
6 : 19/9
6 -( 3/10 *1/1 - 3/10 ) * 2,25
____________________________ =
6 * 9/19
6 -(3/10 -3/10) * 2,25
______________________ =
54/19
6 - 0 * 2,25
____________ = 6 : 54/19 = 6 * 19/54 = 1 * 19/9 = 2 i 1/9
54/19