Answer:
x = -16
5x = -80
1. divide 5 on both sides.
2. x = -16
Answer:
Which expression is the simplest form of 2x3 + x2 +3 (23 – 4.x)?
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Answer: 
Step-by-step explanation:
Least Common Multiple :The least positive number that is a multiple of two or more numbers.
To find : The least common multiple of:
and 
Since, 

The least common multiple of:
and
=
[take highest power of x and y ]
Hence, the least common multiple of:
and
= 