Question

Please solve the following sets of simultaneous equation in detail. I will mark write answer as brainliest.

Answer 1

Answer:

x= -2.5    y= -5

Step-by-step explanation:

( 2x - 3y = 10) * 2

⇒ 4x - 6y = 20      (i)

   4x - 5y = 15 .      (ii)

(i) - (ii)

(4x- 4x) + (-6y - - 5y) = 20 - 15

-y = 5

y = - 5

From (i), 4x - 6(-5) = 20

            x= -10/4 = -2.5