Respuesta :

Answer:

iin what numbers

Step-by-step explanation:
hello! so here’s what you do:

9: (2x+9) + (3x+1) = 90
5x+8=90
5x=82
x=16.4

10: (2x+11) + 53 = 90
2x + 64 = 90
2x = 26
x = 13