Question

4) जर 5x+8y=18 आणि 8x+5y=21, तर x+y ची किंमत काढा.​

Answer 1

Answer:

x+y = 3

Step-by-step explanation:

Equation 1 :- 5x+8y= 18

Equation 2 :- 8x+5y= 21

Equation 1 + Equation 2

13x+13y = 39

On dividing 13 on both sides

x+ y = 3