Topic Details (Notes format)

How to Solve Linear Diophantine Equations (Ax + By = C)

Subject: Mathematics

Book: Maths Mastery

A linear Diophantine equation in two variables, Ax + By = C, seeks integer solutions. Using the Extended Euclidean Algorithm helps find one solution (x₀, y₀), and the full solution set stems from x=x₀+(B/d)n, y=y₀–(A/d)n, where d=gcd(A,B). For example, 6x + 9y = 3 has infinite integer solutions once you find one. Diophantine equations appear in integer partitioning tasks, cryptography (modular arithmetic), and number theory. Mastering them fosters advanced problem-solving skills across discrete math and computational contexts.

Practice Questions

If the sum of three consecutive integers is 96, what are the integers?

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If x:y = 2:3 and z:y = 4:3, what is x:z?

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If a:b = 2:3 and b:c = 4:5, what is a:c?

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The sides of a triangle are 13 cm, 14 cm, and 15 cm. What is its area?

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If a cylinder has a radius of 7 cm and height of 10 cm, what is its volume?

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What is the area of an equilateral triangle with side length 10 cm?

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A train 120 meters long is moving at a speed of 54 km/h. How long will it take to pass a pole?

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What is the probability of drawing a king from a standard deck of 52 playing cards?

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If x - y = 5 and x + y = 15, what is the value of x?

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If x = 3 and y = 4, what is the value of x^2 + y^2?

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