Answer:
⇒ 40 cm
Step-by-step explanation:
Given:
Height of cubes used by Nelson = 8 cm
Height of cubes used by Andrews = 10 cm
Solution:
Nelson made a stack of cubes where the height of the cubes is 8 cm, so the multiplication of the cube height is.
⇒ 
Similarly Andrew also made a stack of cubes where the height of the cubes is 10 cm, so the multiplication of the cube height is.
⇒ 
We can see the shortest same height of the both stack is 40 cm.
Therefore, 40 cm is the shortest possible stake height for both.
12, 106, 42
hope this helps!

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The answer is
Exact form: -35/18
Decimal form:-1.94444444...
Mixed number form: -1 17/18