Respuesta :

Hagrid
Based on the image:
1st quadrant: 3x + 9
2nd quadrant: 2x + y

3x + 9 = 90
3x = 90 - 9
3x = 81
x = 81/3 = 27

Value of x is 27.

2x + y = 90
2(27) + y = 90
54 + y = 90
y = 90 - 54
y = 36

Value of y is 36