Answer:
7abc
24h
63gh
28fg
27deyz
Step-by-step explanation:
7βaβbβc = 7abc
3h β 8 = 3 Β β 8 β h = 24h
7g β 9h = 7 β 9 β g β h = 63gh
4f β 7g = 4 β 7 β f β g = 28fg
3de β 9yz = 3 β d β e β 9 β y β z = 3 β 9 β d β e β y β z = 27deyz