wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Solve the following pair of equations:

7x8y=12

4x+2y=3

A
x=6,y=12
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
x=0,y=32
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
x=0,y=0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
x=52,y=4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B x=0,y=32
We have
7x8y=12(1)
4x+2y=3(2)
Multiplying equation (1) by 4, we have

28x32y=48...(3)

Multiplying equation (2) by 7, we have

28x+14y=21...(4)

Adding equations (3) and (4), we get

18y=27

y=2718=32

Putting y=32 in equation 2, we get

4x+2×32=3

4x=0

x=0

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Substitution Method
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon