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Sub 505 Level|   Algebra|               
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Bunuel
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Bunuel
If the sum of 5, 8, 12, and 15 is equal to the sum of 3, 4, x, and x + 3, what is the value of x ?

A. 14
B. 15
C. 16
D. 17
E. 18

5+8+12+15=40=3+4+x+x+3=10+2x
x=15

IMO B

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