Question

What is the value of x?



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x =

Answer 1

`x=\boxed{9}`

Explanation:

The measure of each angle in an equilateral triangle is 60°.

(7x -3)° = 60°

7x = 63 . . . . . . . divide by °, add 3

x = 9 . . . . . . . . . .divide by 7

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You can tell the triangle is equilateral because all sides are marked with the same mark. That means they are the same length.