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kogti [31]
3 years ago
13

How do I solve for x

Mathematics
2 answers:
Rudik [331]3 years ago
7 0

 

5x - 15 = 3x + 1

5x - 3x = 1 + 15

2x = 16

<h2><u>x = 8</u></h2>

5 · 8 - 15 = 25°    and   3 · 8 +1 = 25°   OK !

⇒  20x - 5 = 180 - 25 = 155°

Verify:

20 · 8 - 5 = = 160 - 5 = 155°  correct



lorasvet [3.4K]3 years ago
6 0
In other cases look for opposing angles that are equal, etc.

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