If thrice a certain number is diminished by 7, the result is 9 more than the number. Find the number.
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Answered by
1
Answer:
21-9=12 is your answer okk
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Answered by
0
Answer:
3x-7=x+9
3n-n=7+9
2x=16
x=16/2
x=-8
Step-by-step explanation:
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