true
illustration
1/3 = .3333....
2/3 = .6666.....
add them
3/3 = .99999......
1 = .99999....
0.999... = 1
True or False?
2 answers
true
x = 0.9999999...
10x = 9.9999999...
subtract to get
9x = 9
x = 1
x = 0.9999999...
10x = 9.9999999...
subtract to get
9x = 9
x = 1