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avanturin [10]
3 years ago
6

Triangle- interior angles . Please help !

Mathematics
1 answer:
valentinak56 [21]3 years ago
6 0

Answer: x = 30

∠H = 75

∠I = 75

Step-by-step explanation:

Write out this equation for solving interior angles

The sum of all 3 angles will equal 180

(2x+15) + (3x-15) + 30 =180

2x + 3x +30 + 15 -15 = 180

2x + 3x + 30 = 180 ( subtract 15 from 15 )

2x + 3x + 30= 180

              -30   -30 ( from both sides)

2x + 3x = 150

5x = 150

Divide

x=30

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