Q. 1 B5.0( 2 Votes )

# Solve the followi

Answer :

[In substitution method, we have to find value of one variable in terms of the other variable from any one of the two given equations . Then, we will substitute this value in the other equation. By doing this, we will get a equation in one variable which can be solved easily]

2x + y = 1….(1)

3x – 4y = 18….(2)

From eq(1),

2x + y = 1….(1)

y = 1 – 2x

Substituting the value of y in eq(2)

3x – 4y = 18….(2)

3x – 4(1 – 2x) = 18

3x – 4 + 8x = 18

11x + 4 = 18

11x = 18 + 4

11x = 22

x = x = 2

Substituting the value of x in eq(1),

2x + y = 1

2×2 + y = 1

y = 1 – 4

y = – 3

Hence,

x = 2,y = – 3

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation view all courses RELATED QUESTIONS :

The solution of 2Tamilnadu Board Math Term-II

Find two numbers Tamilnadu Board Math Term-II

A number consistsTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Solve the followiTamilnadu Board Math Term-II

Kavi and Kural eaTamilnadu Board Math Term-II