Write and solve an equation for .

asked Sep 13, 2021 200k views

1 vote

by Zeeng

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3 votes

Answer:

$x = 40 \: \: degrees$

Explanation:

$3x + 20 + x = 180 \\ 4x + 20 = 180 \\ 4x = 180 - 20 \\ 4x = 160 \\ (4x)/(4) = (160)/(4) \\ x = 40 \: \: degrees$

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