Z*3=6030*5 v*6=76620+47580
z*3=30150 v*6=124500
z=30150:3 v=12450:6
z=10050 v=20750
------------------------ ----------------------------------------
10050*3=6030*5 20750*6=76620+47580
30150=30150 124500=124500
w*4=100000-91720
w*4=8280
w=8280:4
w=2070
---------------------------------
2070*4=100000-91720
8280=8280