3 years ago

The question is in the picture

Mathematics

1 answer:

ryzh [129]3 years ago

8 0

Answer:

105

Step-by-step explanation:

Using basic algebra and the fact that the sum of all angles in a triangle always equals 180, we find that X = 21

Multiply 21 by three to find the value of 3x, which is 63

Add 12 to 63: 75

We also know that the angle of a straight line is also 180, so we subtract 75 from 180 to find ? which is 105

Hope this helps :)

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