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Suppose That a and B Are Integers a≡4( mod 7), and b≡6( mod 7). Find the integer c with 0≤c≤6a \equiv 4 ( \bmod 7 ) , \text { and } b \equiv 6 ( \bmod 7 ) . \text { Find the integer } c \text { with } 0 \leq c \leq 6

Question 75

Short Answer

suppose that a and b are integers, a≡4( mod 7), and b≡6( mod 7). Find the integer c with 0≤c≤6a \equiv 4 ( \bmod 7 ) , \text { and } b \equiv 6 ( \bmod 7 ) . \text { Find the integer } c \text { with } 0 \leq c \leq 6 such that
- c≡a2−b2( mod 7)c \equiv a ^ { 2 } - b ^ { 2 } ( \bmod 7 )

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