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Mathematics
Dangelo Pugh
3 April, 03:49
Twice the sum of a number and 3
+2
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Bella
3 April, 05:09
0
(3+x) 2
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Conley
3 April, 06:38
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33
Step-by-step explanation:
Let the number in question be 'n'. Then twice the sum of the number and 3 is written as:
2 (n + 3)
Three times the difference of the number and 9 is written as:
3 (n - 9)
The problem says these two are equal, so:
2 (n + 3) = 3 (n - 9)
2n + 6 = 3n - 27
Add 27 to both sides:
2n + 33 = 3n
Subtract 2n from both sides:
33 = n (the number is 33)
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