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The sum of the angles in a triangle is always 180°. In this case, we are given two of the angles, which are 30° and 7°. To find the third angle (X), we can subtract the sum of the two given angles from 180°:
180° - (30° + 7°) = 180° - 37° = 143°
Therefore, the measure of angle X is 143°. None of the options provided match this answer.