The polygons below are similar, but not necessarily drawn to scale. Find the values of x and y. (Does anybody know how to do all, or at least most of the work out?)

Step-by-step explanation:
They are similar....so they are scaled
to go from side 16 on the left figure to the corresponding side 12 on the right figure ,
multiply by .75
so .75 ( y+1) = 21
.75 y + .75 = 21
y = 27
Similarly : .75 ( x-1) = 6
.75x - .75 = 6
x = 9