
How do you solve this system of equations:
and ?
Answer
477.6k+ views
Hint: To solve such questions start by multiplying the second given equation with the number . Then subtract the first given equation from the other one which is multiplied by the number . Once the value of is found use that to find the value of .
Complete step by step answer:
Given the equations and .
It is asked to solve these equations.
Suppose that
And
Multiply both the LHS and RHS of the equation with the number , that is
Further computing we get,
Next, subtract the equation from the equation , that is
Further simplifying we get,
Dividing throughout by number , we get
That is we get
Now substitute the value of in equation , that is
Further simplifying, we get
That is,
Subtracting the RHS we get,
Therefore, the solution of the given system of equations is and .
Additional information:
An equation that can be written in the form , where , and are real numbers, and and are not both zero, is known as a linear equation in two variables and . Every solution of the equation is a point on the line representing it.
Note: These types of questions are easy to solve. There are different methods to solve linear equations with two variables, that is, method of substitution and method of elimination. In this solution part, we have used a method of elimination. One can check whether the obtained values of and is correct or not by putting those in the given equations.
Complete step by step answer:
Given the equations
It is asked to solve these equations.
Suppose that
And
Multiply both the LHS and RHS of the equation
Further computing we get,
Next, subtract the equation
Further simplifying we get,
Dividing throughout by number
That is we get
Now substitute the value of
Further simplifying, we get
That is,
Subtracting the RHS we get,
Therefore, the solution of the given system of equations is
Additional information:
An equation that can be written in the form
Note: These types of questions are easy to solve. There are different methods to solve linear equations with two variables, that is, method of substitution and method of elimination. In this solution part, we have used a method of elimination. One can check whether the obtained values of
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹ per year
Recently Updated Pages
Master Class 10 Computer Science: Engaging Questions & Answers for Success

Master Class 10 Maths: Engaging Questions & Answers for Success

Master Class 10 English: Engaging Questions & Answers for Success

Master Class 10 General Knowledge: Engaging Questions & Answers for Success

Master Class 10 Science: Engaging Questions & Answers for Success

Master Class 10 Social Science: Engaging Questions & Answers for Success

Trending doubts
Which one is a true fish A Jellyfish B Starfish C Dogfish class 10 biology CBSE

Difference between mass and weight class 10 physics CBSE

Identify the following with the help of map reading class 10 social science CBSE

A farmer moves along the boundary of a square fiel-class-10-maths-CBSE

What is the full form of POSCO class 10 social science CBSE

What is potential and actual resources
