I don't know for sure I'm going to ace grade next year but I know that you you need to put the coefficients with the same variable together and the variable next to the coefficients and multiply or add or divide or subtract them and you get your answer and this is just 7th grade math I'm relying on
-2(5)^2+2(5)-3
-2(25)+10-3
-50+10-3
-40-3
=-43
Answer:

Step-by-step explanation:

Dividing both sides by -7.


There is only one solution that satisfies the equation.
15 adult tickets, or 41 children tickets. but combined it could be, 13 adults and 5 children tickets.