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MATH / If j is a positive integer and the expression (7j+3) is multiplied by 3 and then divided by 7, what is the remainder?

Problem

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problem

If jj is a positive integer and the expression (7j+3)(7j+3) is multiplied by 3 and then divided by 7, what is the remainder?
Plain-text mathematical notation (without MathML)
If j is a positive integer and the expression (7j+3) is multiplied by 3 and then divided by 7, what is the remainder?
Original LaTeX notation
If $j$ is a positive integer and the expression $(7j+3)$ is multiplied by 3 and then divided by 7, what is the remainder?

level

Level 2

type

Number Theory

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