Question

20x-11y=27and10x+7y=110 substitute and elimination method​

Answer 1

ELIMINATION METHOD

20x -11y =27 ——————(1) ×1

10x +7y =110 ——————(2) ×2

20x -11y = 27

20x -14y = 220

- + -

______________

3y = -193

y= -193/3

=64.33

20x -11y =27

20x -11(64.33) =27

20x =27- 707.63

20x = -680.64

x= -680.64/20

therefore,

x =34.0315

y=64.33