- #1
mattmns
- 1,118
- 6
Question 1.
[tex]6x + 3 \equiv 1 mod 10[/tex]
I added [tex]8 \equiv 8 mod 10[/tex]
and got
[tex]6x + 11\equiv 9 mod 10[/tex]
then subtracted [tex]11 \equiv 1 mod 10[/tex]
and have
[tex]6x \equiv 8 mod 10[/tex], but am stuck here. Any ideas?
Question 2.
[tex]x^2 \equiv 1 mod 21[/tex]
This one I am lost on. Maybe subtract 1, and then use (x+1)(x-1), but I am not feeling that way either. Thoughts? Danke!
[tex]6x + 3 \equiv 1 mod 10[/tex]
I added [tex]8 \equiv 8 mod 10[/tex]
and got
[tex]6x + 11\equiv 9 mod 10[/tex]
then subtracted [tex]11 \equiv 1 mod 10[/tex]
and have
[tex]6x \equiv 8 mod 10[/tex], but am stuck here. Any ideas?
Question 2.
[tex]x^2 \equiv 1 mod 21[/tex]
This one I am lost on. Maybe subtract 1, and then use (x+1)(x-1), but I am not feeling that way either. Thoughts? Danke!
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