solve the following pair of linear …

CBSE, JEE, NEET, NDA

CBSE, JEE, NEET, NDA

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

solve the following pair of linear equations. (I)ax+by=a-b,bx-ay=a+b
  • 2 answers

Preeti Dabral 1 month, 1 week ago

ax+by=a-b
ax=a-b-by
x=a-b-by/a←

bx-ay=a+b
substituting
b(a-b-by/a)-ay=a+b
ab-b²-b²y/a-ay=a+b
ab-b²-b²y-a²y/a=a+b
ab-b²-(b²+a²)y=a²+ab
-(b²+a²)y=a²+ab-ab+b²
(b²+a²)y=-(a²+b²)
y=-(a²+b²)/a²+b²
y=-1←

substituting value of y
x=a-b-b(-1)/a
x=a-b+b/a
x=a/a
x=1

Bhawna Yadav 1 month, 1 week ago

ax+by=a-b ax=a-b-by x=a-b-by/a← bx-ay=a+b substituting b(a-b-by/a)-ay=a+b ab-b²-b²y/a-ay=a+b ab-b²-b²y-a²y/a=a+b ab-b²-(b²+a²)y=a²+ab -(b²+a²)y=a²+ab-ab+b² (b²+a²)y=-(a²+b²) y=-(a²+b²)/a²+b² y=-1← substituting value of y x=a-b-b(-1)/a x=a-b+b/a x=a/a x=1
http://mycbseguide.com/examin8/

Related Questions:

Ch 3 ex 3.5 Q.4
  • 2 answers
mid point q.
  • 1 answers
Unlike fraction to like fraction
  • 0 answers
Ch.5 ex 5.3
  • 1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

CBSE Test Generator

Create papers in minutes

Print with your name & Logo

Download as PDF

3 Lakhs+ Questions

Solutions Included

Based on CBSE Blueprint

Best fit for Schools & Tutors

Test Generator

 

Test Generator

at ₹10/- per paper