Respuesta :

Answer:

9. x = 16

10. x = 18

Step-by-step explanation:

9. 2x + 9 + 3x + 1 = 90

5x + 10 = 90

5x + 80

x = 16

10. 90 - 53 = 47

2x + 11 = 47

2x = 36

x = 18

nikshore44
x=18 for the simplest answer
brainliest?