Topic Details (Notes format)

How to Solve Linear Equations (Single Variable)

Subject: Mathematics

Book: Maths Mastery

Solving linear equations with one variable is a foundational algebraic skill. These typically appear in the form ax + b = c, where x is the variable to solve for. The key steps involve isolating x by reversing operations in a structured manner: subtract or add constants from both sides, then multiply or divide by the coefficient. For example, in 3x + 4 = 16, subtract 4 from both sides to get 3x = 12, then divide by 3 to find x = 4. Linear equations model numerous real-life situations, such as budgeting daily expenses, calculating distances, and analyzing rates. Proficiency with them paves the way for advanced mathematics like systems of equations and polynomials.

Practice Questions

If x^2 - 6x + 9 = 0, what is the value of x?

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If a + b = 10 and ab = 21, what is the value of a^2 + b^2?

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If a = 4 and b = 5, what is the value of (a+b)^2?

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If the ratio of two numbers is 3:5 and their HCF is 4, what are the numbers?

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The ratio of two numbers is 3:5, and their sum is 64. What are the numbers?

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If x^3 - 3x^2 + 4 = 0, what is one root of the equation?

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What is the sum of all even numbers between 1 and 100?

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If a = 5 and b = 12, what is the length of the hypotenuse of a right triangle?

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The sum of the reciprocals of two numbers is 1/4. If one number is 12, what is the other?

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The probability of getting an even number when rolling a die is:

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