Question

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Answer 1

x = 13

Explanation:

The sum of the 3 angles in a triangle = 180°

Summing the 3 given angles and equating to 180 gives

7x + 10 + 4x + 17 + x - 3 = 180

12x + 24 = 180 ( subtract 24 from both sides )

12x = 156 ( divide both sides by 12 )

x = 13