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barxatty [35]
3 years ago
12

How do you solve for problems like this? I know they have to add up to 180.

Mathematics
2 answers:
harina [27]3 years ago
5 0

You already know the sum of the measures of the interior angles of a triangle add up to 180 degrees, so make all the angles add up to 180 in an equation.

(3x + 4) + (x + 8) + (2x) = 180

Combine like terms.

6x + 12 = 180

Subtract 12 from both sides.

6x = 168

Divide both sides by 6.

\boxed {x = 28}

Olegator [25]3 years ago
5 0
X = 28. Hope I was able to help

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