Question

2x+3y=14 2x-3y=2 find the value of 5xy​

Answer 1

Answer:

2x + 3y = 14

2x - 3y = 2

So , (2x + 3y = 14) + (2x - 3y = 2)

=> 4x + 0 = 16

=> 4x = 16

=> x = 4

So , 2 × 4 + 3y = 14

8 + 3y = 14

3y = 6

y = 2

Therefore, 5xy = 5×4×2

= 40