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PLEASE HELP ASAP!!!!

PLEASE HELP ASAP!!!!-example-1

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Answer:

11

Explanation:

Since M is on LN,

LM + MN = LN.


(2x+7)+3x=4x+9

Remove brackets:


2x+7+3x=4x+9

Add the x terms:


5x+7=4x+9

Subtract 7 from both sides:


5x+7-7=4x+9-7


5x=4x+2

Subtract 4x from both sides:


5x-4x=4x+2-4x


x=2


LM=2x+7=2(2)+7=4+7=11

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