sweetie129 sweetie129

12-11-2020
Mathematics

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jadelaw884 jadelaw884

12-11-2020

Answer: x= 15

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Аноним Аноним

12-11-2020

Answer:

x=15

Step-by-step explanation:

they are supplementary so they add up to 180.

7x-9+5x+9=180

simplify

12x=180

divide by 12

x=15

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