One fifth of a number plus one third of a different number

Which expression converts 45 degree to radians

Of . 3x+4y+4z=4, 5x+7y+3z=5 4x+5y+7z=7

Shown here are the three essential steps in a proof of the pythagorean theorem. comparing the 1st and 3rd steps how are the colored regions related as to the areas? a. yellow+blue=orange b. orange=yellow=green c.yellow+blue=green=orange d.yellow+green=orange+blue