Answer:
20x - 5y= -5
6x- 5y= 9
14x= - 14
x= - 14by4= - 1
put value in equation2
6( - 1) - 5y= 9
- 5y= 9 plus 6
- 5y= 15
y= -15 by5= - 3
7.8m questions
10.5m answers