Log3(7) + log3(x)
Terms that are multiplied inside one log become added when you separate them where each term gets its own log.
7 > z + 18 ≥ 6
Subtract 18 from all 3 parts:
7-18 > z +18 -18 ≥ 6-18
-11 > z ≥ -12
<span>solution of a system of linear equations</span>
