Tuesday, November 18, 2014

solve the inequality 7 =

Given the inequality:


7
=< 2x-5 =< 11


We need to find the values of x
that verifies the inequality.


First we need to isolate x in
the middle by itself.


We will add 5 to all
sides.


==> 7+5 =< 2x =<
11+5


==> 12 =< 2x =<
16


Now we will divide by
2.


==> 12/2 =< x =<
16/2


==> 6 =< x =<
8


Then the values of x that verifies the inequality is
bounded by 6 and 8.


Then x belongs to the
interval [6, 8].

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