One side of a triangle is 6 meters more than twice the shortest side. the third side is 9 meters more than the shortest side. the perimeter is 25 meters find all three sides

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

How do i do this activity, is appreciated

Solve the system of equations y= 3/2 - 1, -x+ y =-3