Question

For 4x + 5y = 10 and 5x + 4y = 17 , x + y = ? *


1) 27
2) 3
3) 9
4) - 3​

Answer 1

Answer:

x+y=5-2=3

Step-by-step explanation:

20x+25y=50

20x+16y=68

9y=-18

y=-2

4x=20

x=5