-7 (-5ab + 6ac - 11 abc )
Please help

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.