How do you evaluate the expression 9 + x + 4x for x=8?

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Answer 1 · 2018-04-02T04:45:48

#49#

#9+x+4x#

First combine like terms

#=> 9+5x#

Substitute x with 8.

#=> 9+5(8)#

Now solve algebrically.

#=> 9+40#

#=> 49#