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yan [13]
3 years ago
8

Please answer correctly !!!!!!!!!!!!!!!!!! Will mark brianliest !!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
joja [24]3 years ago
7 0

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

Mariana [72]3 years ago
5 0

Answer: x= 15

Steps shown in image below

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