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3 times the difference of a number and 7 is 18
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3 times the difference of a number and 7 is 18

User GgDeGreat
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1 Answer

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" the difference " means subtract

3(n - 7) = 18
3n - 21 = 18
3n = 18 + 21
3n = 39
n = 39/3
n = 13 <== ur number
User Jon Chu
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