jaja11355 jaja11355

08-02-2018
Mathematics

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choixongdong choixongdong

08-02-2018

answer
3x = 78 + x - 2

hope it helps

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musiclover10045 musiclover10045

08-02-2018

you would use 3x = 78+(x-2)

An outside angle ( 3x) always equals the sum of the 2 opposite inside angles ( 78 & (x-2)

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