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noname [10]
3 years ago
8

I need help with number 2 :(

Mathematics
1 answer:
Shalnov [3]3 years ago
7 0

x + 12 + 19x + 8 = 180

x + 19x = 20x (combining like terms)

12 + 8 = 20 (combining like terms)

20x + 20 = 180

180 - 20 (subtracting 20 to both sides)

20x = 160

160 / 20 = 8 (dividing by 8 on both sides)

<em>x = 8</em>

CDA = x + 12

CDA = 8 + 12

<u>CDA = 20</u>

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