Hello I need help solving some problems please!

[Hadramout]

1.) The senior classes of High school A and High school B planned separate trips to the indoor climbing gym. The senior class of High school A rented and filled 2 vans and 3 buses with 105 students. High school B rented and filled 14 vans and 6 buses with 270 students. Each van and each bus carried the same number of students. How many students can a van carry? How many students can a bus carry?

2.) Solve the system using substitution:
{ ? − 8 = 3?
{? − 9 = 1/3x

3.) Solve the system using linear combinations (elimination method):
{ -2x+y=1
{ 6x-2y=-16

 

[Deleted member 4993]

1.) The senior classes of High school A and High school B planned separate trips to the indoor climbing gym. The senior class of High school A rented and filled 2 vans and 3 buses with 105 students. High school B rented and filled 14 vans and 6 buses with 270 students. Each van and each bus carried the same number of students. How many students can a van carry? How many students can a bus carry?

2.) Solve the system using substitution:
{ ? − 8 = 3?
{? − 9 = 1/3x

3.) Solve the system using linear combinations (elimination method):
{ -2x+y=1
{ 6x-2y=-16

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