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Can someone explain how to do this?

Can someone explain how to do this?-example-1
User Jens Ayton
by
8.0k points

2 Answers

3 votes

Answer:

3x-4+3x-8=180

3x+3x=180+4+8

6x=192

x=32

check: 3(32)-4+3(32)-8=180

User Jon Grant
by
8.0k points
5 votes

Answer:

x = 32°

Explanation:

The two angles form a straight line, so therefore they are supplementary.

The sum of supplementary angles always equal 180°, so we know that:

(3x - 4) + (3x - 8) = 180°

Now you have the equation, solve for x.

3x - 4 + 3x - 8 = 180°

6x - 12 = 180°

6x = 192°

x = 32°

User Haravikk
by
8.6k points

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