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5 votes
Answer please thank you

Answer please thank you-example-1

1 Answer

3 votes

Answer:

34

Explanation:

ABD = 79

ABD = DBC + CBA

79 = (8x - 3) + (5x + 4)

combine like terms

79 = 13x + 1

goal is to isolate variable

subtract 1 from both sides

78 = 13x

divide both sides by 13

6 = x

plug x value into expression given for DBC

5(6) + 4

use pemdas

30 + 4

34

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