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If D equals 6x - 7 + 8 equals 4x + 9 find the DB
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If D equals 6x - 7 + 8 equals 4x + 9 find the DB

User Thomas Blobaum
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1 Answer

4 votes

If DE = 6x - 7 and AE = 4x + 9, find DB.

DE and AE are line segments. We need to equal DE = AE


DE=AE
6x-7=4x+9
6x-4x=9+7
2x=16
x=8

Now, DB = DE + EB


DB=6x-7+4x+9
DB=10x+2

x = 8


DB=10(8)+2\rightarrow DB=82

DB is 82

User Ian Wise
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