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avanturin [10]
3 years ago
6

I need help with this ^

Mathematics
1 answer:
Makovka662 [10]3 years ago
3 0

Answer:

a=11

Step-by-step explanation:

Add all expressions to equal 180. (a+20+12a-14+a+20=180)

Combine like terms and solve

You'll get a=11

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