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17-07-2022
Mathematics

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Find the value of x.

Find the value of x class=

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17-07-2022

Angles sum up to:

( n - 2 ) × 180 = ( 5 - 2 ) × 180 = 3 × 180 = 540

[tex]x + 4x + 4x + 135 + 135 = 540[/tex]

[tex]9x + 270 = 540[/tex]

[tex]9x = 540 - 270 \\ 9x = 270[/tex]

[tex]x = \frac{270}{9} = 30[/tex]

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