przedstaw liczbę w postaci ułamka zwykłego.... a] 0,(7) b] 0,(81) c] 0,(135) d] 0,0(123) Pomocy !!!
a] 0,(7)
x= 0,(7)
10x = 7,(7)
10x - x = 7,(7) - 0,(7)
9x = 7
0,(7) =
b] 0,(81)
x = 0,(81)
100x = 81,(81)
100x - x = 81,(81) - 0,(81)
99x = 81
0,(81) =
c] 0,(135)
x = 0,(135)
1000x = 135,(135)
1000x - x = 135,(135) - 0,(135)
999x = 135
0,(135) =
d] 0,0(123)
10 x = 0,(123)
10000x= 123,(123)
10000x - 10x = 123,(123) - 0,(123)
9990 = 123
0,0(123) =
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a] 0,(7)
x= 0,(7)
10x = 7,(7)
10x - x = 7,(7) - 0,(7)
9x = 7
0,(7) =
b] 0,(81)
x = 0,(81)
100x = 81,(81)
100x - x = 81,(81) - 0,(81)
99x = 81
0,(81) =
c] 0,(135)
x = 0,(135)
1000x = 135,(135)
1000x - x = 135,(135) - 0,(135)
999x = 135
0,(135) =
d] 0,0(123)
10 x = 0,(123)
10000x= 123,(123)
10000x - 10x = 123,(123) - 0,(123)
9990 = 123
0,0(123) =