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katovenus [111]
3 years ago
11

I need help for this problem.

Mathematics
2 answers:
Lelechka [254]3 years ago
7 0

Answer:

Step-by-step explanation:

Equation

12x + (8x + 5) + 15x = 180    All triangles have 180o for their interior angles.

12x + 8x + 5 + 15x = 180      Combine like terms on the left

35x + 5 = 180                        Subtract 5 from both sides

     <u>  - 5      -5</u>

35x =175                                Divide by 35

x = 5

It's not clear what you want. x = 5 is one possibility

12x = 60

15x = 75

8x+5=45

is another possiblity

Harrizon [31]3 years ago
3 0

Answer:

Step-by-step explanation:

12x+15x+8x+5=180 degree(being sum of interior angles of a triangle)

35x=180-5

x=175/35

x=5

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