2 answers:
81 /u =3
multiply by u on each side
81/u * u = 3 * u
81 = 3u
divide by 3 on each side
81/3 = 3u/3
27=u
Question
Solve for u . = 81/u=3
81/u = 3
u = 81 : 3 =
27 is your answer
----------------------------
check
81/27 = 3
the answer is good
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