x= 6,0666...&amp;#10; \\ 10x=60,666...&amp;#10; \\ 100x = 606,66...&amp;#10;&amp;#10; \\ 100x - 10x = 546 &amp;#10;&amp;#10; \\ 90 x = 546 &amp;#10; \\  x= 546/90&amp;#10;&amp;#10;&amp;#10;