Question

2/x+3/y=13,5/x-4/y=-2 solve by substitution method​

Answer 1

Answer:

x=1/2 & y=1/3.

Step-by-step explanation:

Let 1/x=a, 1/y=b

2a+3b=13...... (1)

5a-4b=-2...... (2)

(1)×4 → 8a+12b=52 ..... (3)

(2)×3→ 15a-12b=-6 ..... (4)

solving 3&4,

23a=46

a=2

substituting a=2 in eqn 2

5(2)-4b=-2

10-4b=-2

-4b=-2-10

-4b=-12

b=3

1/x=a 1/y=b

1/x=2 1/y=3

x=1/2 y=1/3

HOPE IT HELPS...

Answer 2

Answer:

I hope this two photos helps you.