a-b=600....=> a=b+600
a:4>b:3 cu 50...=> a:4=b:3+50
notam
b:3=x....=>b=3x
a:4=x+50...=> a=(x+50)*4....=> a=4x+200
inlocuim in relatie si obtinem:
4x+200 -3x=600
x+200=600
x=600-200
x=400............=> a=400*4+200
a=1600+200
a=1800
b=400*3
b=1200
1800-1200=600
1800:4>1200:3 cu 50
450>400 cu 50