How do you solve $4 + 2x < x + 13$ ?

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Answer 1 · 2015-08-10T19:38:51

Answer is $x<9$ or $x in (-oo;9)$

$4+2x<x+13$

You begin with moving all expressions with $x$ to left and all numbers to right:

$2x-x<-4+13$

Now you just have to add expressions on both sides to get the answer:

$x<9$

How do you solve 4 + 2x < x + 134 + 2x < x + 13?