1.

AH + AHAH + CHHF = HBBA

13 + 1313 + 2335 = 3661


2.

ABC + ABC + ABC + BAH + BAH = GBA

129 + 129 + 129 + 217 + 217 = 821


3.

FCEAB + HUI + THU = ABCDE

59360 + 712 + 871 = 60943