Question

3. Solve the following equation
(i) (x/5y - 7 < 13 is x is a prime mo?​

Answer 1

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{y∣35y−7≤13}, y is a prime number

so 35y−7≤13

⇒35y≤13+7=20

⇒5y≤20×3=60

⇒y≤560=12

so y≤12 and y is a prime number.

so y can be 2,3,5,7,11