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

Solve: 15x +7y = 8,30x+21y = 18

A

x = 3, y = 73
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

x = 2, y = 7
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

x = 52 y = 72
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
x = 5, y = 75
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
Not possible
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C
x = 52 y = 72
15x + 7y = 8 30x + 14y = 16 ....... (1)
30x + 21y = 18 .......(2)
Subtracting (1) from 2, we get 7y = 2
y = 72
Substituting the value of y in either of the equations, we get x = 52

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Equation reducible to linear equations in two variables.
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon