Answer:
35 (105 / 3)
Explanation:
3x - 24 = 81, so it would be 3x = 24 + 81
and 24 +81 = 105
so 3x = 105, then to find x you do 105 / 3
and 105 / 3 = 35
but 35 as a fraction is 105/3
3x is equals to 81 + 24
3x=105
x=105/3
x=35
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