Question

solve the following simultaneous equation using Cramer's rule 3x +4y =11 & 4x + 3y =10 then x+y =?

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Answer 1

Answer:

3x+4y=11

4x+3y=10

Step-by-step explanation:

D=3 4 = 3×3 -4×4 = 9-16= -7...(1)

4 3.

Dx= 11 4 = 11×3-10×4= 33-40 = -7.....(2)

10 3

Dy= 3 11 =3×10-11×4=30-44=-14 ....(3)

4 10

Therefore X= -7/-7 =1

Y=-14/-7=2

THEREFORE X=1 and Y=2 is solution of given equation ...

thank you ,