In a certain fraction, the numerator is 4 less than the denominator. if 4 is added to both the numerator and the denominator , the resulting fraction is equal vhat was the original 8/12 fraction (not necessarily written in lowest terms)

Step-by-step explanation:

If the new fraction is 8/12 I will show how to find it.

Let's say the original denominator is x, then the numerator is x-4, so we have (x-4)/x.

Then it says f we add 4 to both, so now we have x/(x+4) this equals 8/12.  Now, keep in mind -4 cannot be an answer because it would make x/(x+4) be divided by 0 which wouldn't exist.

Now we just use algebra.

x/(x+4) = 8/12

12x = 8(x+4)

12x = 8x + 32

4x = 32

x = 8

So the original fraction (x-4)/x = (8-4)/8 = 4/8

Figure 1,

When 1 unit = 1 cm

Perimeter = Boundary of the figure

                = 3+3+6

                = 12 cm

Area of one square = side * side

                                    = 1*1

No. of squares in the figure = 6 squares

Area = Space occupied inside the figure

        = 6 cm^2

Hope it helped :)