Solve the equation 0.6x + 2.7= 0.9x

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is