5/x=x+2/3 . multiply each side by the common denominator to find the quadratic equation equivalent to this equation.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

Acollection of nickels and quarters is worth $2.85. there are 3 more nickels than quarters.how many nickels and quarters are there?

Acone is placed inside a cylinder. the cone has half the radius of the cylinder, but the height of each figure is the same. the cone is tilted at an angle so its peak touches the edge of the cylinder’s base. what is the volume of the space remaining in the cylinder after the cone is placed inside it?