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gtnhenbr [62]
2 years ago
6

Help me please of this question

Mathematics
1 answer:
kati45 [8]2 years ago
5 0

Answer:

28

Step-by-step explanation:

all adds up to 180 degrees

so 4x+3+2x+9=180

=6x+12=180

6x=168

x=28

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