y = 38 -3x
second day:
3x +2y = 52
look above, we know that y is 38-3x, so lets substitute it! in this way we make only one unknown variable in the eqaution instead of two!
3x + 2(38-3x) =52
3x + 76 -6x =52
-3x =52 -76
-3x = -24
3x = 24
x = 24/3
x=8
of look! we found the price of the adult tickets! now lets substitute it into one of our equations to find the y value, which will give us the price of the child tickets!