Question

http://prntscr.com/9asoid

Answer 1

you can solve these by elimination after multiplying the first equation by 2 and the second by -5.

Adding these 2 equations will eliminate the terms in x .

Answer 2

5x - 3y = -9 * 2 ---> 10x - 6y = -18 --(1)
2x - 5y = 4 * -5 ---> -10x + 25y = - 20 ----(2)

add equations (1) and (2)

Answer 3

20x - 21y= -38 @pooja195