Question

3x+5y=10 and 5x+3y=30then average if x and y is?​

Answer 1

Step-by-step explanation:

solve:.3x+5y=10----------(i)

5x+3y=30----------(ii)

15x+25y=50------(iii)

15x+9y=90--------(iv)

(15x+25y)-(15x+9y)=50-90

15x+25y-15x-9y= -40

16y= -40

y= -40/16

y= -5/2

3x+5×(-5/2)=10

3x-25/2=10

3x=10+25/2

3x=20+25/2

3x=45/2

x=45/(2×3)

x=15/2

x=15/2,,,,,,,y= -5/2