I.1) 0.(4) = x |*10
2) 4.(4)=10x
0,(4)=x
3) 9x=4 | : 9
x=4/9
II. 1) 0,(19)=x |*100
2) 19,(19)=100x
0,(19)=x
3) 99x=19 | : 99
x=19/99
III. 1) 0,(369)=x |*1000
2) 369,(369)=1000x
0,(369)=x
999x=369 | : 999
x=369/999
IV. 1) 0,(217) = x | * 1000
2) 217,(217) = 1000x
0,(217)=x
3) 999x=217 | : 999
4) x=217/999
Пошаговое объяснение:
