Question 315163
I need help with this equation below.

1. Find the least common multiple (LCM)of (7+6u),(49-36u^2) and (7-6u)
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There is no equation.  Equations have equal signs.  Equal, equate, equation.
Equations are often solved.  you have nothing to solve.
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Your problem states:
Find the least common multiple (LCM)of (7+6u),(49-36u^2) and (7-6u)
49 - 36u^2 is the product of the other two terms, so it's the LCM.