Answer: C
<u>Step-by-step explanation:</u>

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Answer:

Step-by-step explanation:
Given


Required
Determine the part left
The part left is calculated using:



Take LCM



3x - 5 = 2x + 7 i call the number "x"
3x = 2x + 12
1x = 12
x = 12 the number is 12