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Find the value of x.
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Find the value of x.

Find the value of x.-example-1
User Brad Ackerman
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1 Answer

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This is an isosceles triangle. Therefore, at the base we have congruent angles (look at the picture).

We have the equation:

(5x + 13)° + (3x + 7)° = 180°

5x + 13 + 3x + 7 = 180 combine like terms

(5x + 3x) + (13 + 7) = 180

8x + 20 = 180 subtract 20 from both sides

8x = 160 divide both sides by 8

x = 20

Find the value of x.-example-1
User Stormfield
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