Question

1. 16 < 7 + x

-18 -15 -12 -9 -6 -3 0 3 6 9 12 15 18
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Explanation:

Step1: Isolate x by subtracting 7

$16 - 7 < 7 + x - 7$
$9 < x$

Step2: Plot on number line

Open circle at 9, shade right.

Answer:

$x > 9$
(Graph: Open circle at 9, arrow pointing right)