Question 15
In each independent set of pictures, equal symbols have equal values. Find the value of the final symbol. The first printing uses heart H, round gem G and diamond D: H+H=12; H×G+G=21; D−G=7. The two additional printings replace these respectively with (teardrop, round gem, diamond) and (heart, square gem, star gem), retaining the same equations. Give their common final value.
