Question

(3x - 11) + (2x + 5) + 9/2x + (4x + 15) = 360° . find x
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Answer 1

(3x - 11) + (2x + 5) + 4.5x + (4x + 15) = 360°

3x+2x+4.5x+4x = 360+11-5-15

13.5x = 351

x= 351/13.5

Answer 2

Answer:

$3x - 11 + 2x + 5 + \frac{9x}{2} + 4x + 15 = 360 \\ \\ 9x + \frac{9x}{2} + 9 = 360 \\ \\ \frac{18x + 9x}{2} = 360 - 9 \\ \\ \frac{27x}{2} = 351 \\ \\ x = 351 \times \frac{2}{27} \\ \\ x = \: 26$

Step-by-step explanation:

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