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Someone help me out with this one

Someone help me out with this one-example-1

1 Answer

3 votes

Answer:

Explanation:

AB + BC = AC

9x + 7 - 3x + 20 = 39 { combine like terms}

9x -3x + 7 + 20 = 39

6x + 27 = 39 {Subtract 27 from both sides}

6x = 39- 27

6x = 12 {divide both sides by 6}

6x/6 = 12/6

x = 2

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