Simplify $9+3+4$ in $mod 7$

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Odinaka_OTyro

Asked: January 7, 20212021-01-07T15:26:13+00:00 2021-01-07T15:26:13+00:00In: Arithmetic, Numbers and Combinatorics

Simplify $9+3+4$ in $mod 7$

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Simplify $9+3+4$ in $mod 7$

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Sengemegz · Accepted Answer · 2021-01-09T20:32:42+00:00

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Sengemegz Moderator

2021-01-09T20:32:42+00:00Added an answer on January 9, 2021 at 8:32 pm

$9+3+4$ in $mod 7$
$\Rightarrow 9+3+4=16$ in $mod 7$
next look for the number that will multiple 7 to give 16 or a number close to 16 but not more than 16
$\Rightarrow 7 \times 2=14$
What must be added to 14 to make it 16? is 2
$\therefore 9+3+4\equiv 2$ in $mod 7$

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Simplify $9+3+4$ in $mod 7$