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1 p.m. (13.00) because then it will be 11 a.m. add 2 hrs
you can add Mod 12, this is like clock math. If it is 11 o'clock and you add 2 hours, it is then 1 o'clock. This is called addition Mod 12.
add -10... 11 + (-10) = 11-10=1 ur welcome! So that would be 2x + 11 = 1 where x = -5.
When adding negative integers, you subtract. (2+-1=1) When subtracting negative integers, you add. (2--3=5)
Starting with the zero, you add numbers sequentially. So, you add 1, then 2, then 3 then 4 etc.