Question

5x+9y=-1, 18x+9y=27 elimination

Answer 1

Step-by-step explanation:

5x+9y=-1

18x+9y=27

Therefore -5x-9y=+1 (By multiplying by -1)

Therefore; 18x-5x + 9y-9y = 27+1

=13x= 28 (Adding Both Equations)

x=28/13

As 5x+9y= -1

(5 x 28/13) + 9y= -1

= 140/13+9y= -1

9y= -1 - 140/13

9y= -153/13

y= -153/13 x 1/9

y= -153/117

Bhai Ab to Brainliest Mark Karo!!