Răspuns :
284-150=134 (suma II si IV)
134-20=114 (II*2)
114:2=57 (II)
57+20=77 (IV)
77+10=87 (I)
150-87=63 (III)
134-20=114 (II*2)
114:2=57 (II)
57+20=77 (IV)
77+10=87 (I)
150-87=63 (III)