Question

(4) जर 15x + 17y = 85 आणि 17x + 15y
75 तर ची x + y ची किंमत काढा.​

Answer 1

Answer:

15x+17y=85 equation1

17x+15y=75 equation 2

subtracting equation 1and 2

-2x+2y=10 equation 3

2y=10-2x

y=10-2x/2

put yhe value of y in equation (1)

15x+17(10+2x/2)

30x+170+34x=170

64x=0

x=0

put the value of x in equation 3

2y=10

y=5