#12. how is the answer 48? how do i get it?

Alright, so we've established that the true answer is 48, but we need to understand how to get that.

We know the equation is (t/4) - 3 = 9

First, we need to add 3 to both sides. You should come up with: t/4 = 12

Now, when you have a fraction like that, you need to multiply by the denominator on both sides, no matter what the numerator may be. Therefore:

t/4 (4) = 12(4)

t = 48

As another example to enhance your understanding, let's use (x/5) - 6 = 10.

You'd begin by adding 6 to each side: (x/5) = 16.

Then, multiply by 5 (the denominator) on both sides.

x = 80.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk