five years ago Charlie was twice older then priya what are their ages now if in 3 years the sum of their ages will be 76

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9