Answer:
x=-2
Step-by-step explanation:
14-(x+5)=3(x+9)-10
14-x-5=3x+27-10
14-5-x=3x+17
+x +x
9=4x+17
-17 -17
4x=-8
4x/4=-8/4
Approximately 81 books
731 / 9
Divide 731 by 9 to get 81.22...
731 / 9 = 81.22...
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