CameraIcon

SearchIcon

MyQuestionIcon

80

You visited us 80 times! Enjoying our articles? Unlock Full Access!

Algebraic expressions

Select and wr...

Question

Select and write the most appropriate alternative from those given below:
If $7 x + 3 y = 11$ and $3 x + 7 y = - 1$ then $x - y =$

A

3

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

10

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

12

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $3$
$7 x + 3 y = 11$ ......(1)
$3 x + 7 y = - 1$ .....(2)
$(1) - (2)$
$7 x + 3 y - 3 x - 7 y = 11 + 1$
$4 x - 4 y = 12 \Rightarrow x - y = 3$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Select the most appropriate alternative from those given below:
Credit balance of Profit and Loss A/c indicates _______ .

Q. Select the most appropriate alternative from those given below:
Debit balance of Profit and Loss A/c indicates _______.

Q. Select the most appropriate alternative from those given below:
External Liabilities plus Capital is_______ .

Q. Select the most appropriate alternative from those given below:
Carriage inward is debited to ________ Account.

Q. Select the most appropriate alternative from those given below:
Debit balance of Trading Account means _________ .

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Algebraic expressions

Standard VIII Mathematics

Join BYJU'S Learning Program

CrossIcon