43 of 100: The AHA Moment

Algebra Level 1

HADHA+HAHA \begin{array} {ccccc} \large & & & \color{#D61F06}H & \color{#20A900}A & \color{#3D99F6}D\\ \large & & & & \color{#D61F06}H & \color{#20A900}A\\ \large + & & & & & \color{#D61F06}H \\ \hline \large & & & \color{#20A900}A & \color{#D61F06}H & \color{#20A900}A \end{array}

If each letter represents a different nonzero digit, what must D\color{#3D99F6}D be?

This is the hardest cryptogram we've challenged you with so far, but they can get much harder yet!

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