3x+4y=11;4x+3y=10 than find a x+y=?
Answers
Answered by
0
Step-by-step explanation:
hope so this will help you
Attachments:
Answered by
0
Answer:
= x + y
= 1 + 2
= 3
Step-by-step explanation:
3x + 4y = 11______(1)
4x + 3y = 10______(2)
Multiplying eq. 1 by 3 and eq. 2 by 4
9x + 12y = 33_______(3)
16x + 12y = 40_______(4)
Solving eq. 3 and 4
-7x = -7
x = -7/-7 = 1
Putting value of x in eq. 1
3x + 4y = 11
3×1 + 4y = 11
3 + 4y = 11
4y = 11 - 3
4y = 8
y = 8/4 = 2
Finding value of x + y
= x + y
= 1 + 2
= 3
Similar questions