Bella had 1/3 of a wall to paint.she painted 1/4 of what was left green and 1/2 yellow.what is the area of the region Bella.has not yet painted?

Answer 1

she painted 3/4 of 1/3 = 1/4 of the total wall
what was left is 1/3 -1/4 = 4/12 -3/12 = 1/12 is bare still