To solve for the value of \( x \) in the context you provided, we need a clear relationship or equation involving the angles you listed: 51° and (3x)°.
If we assume that these angles are angles in a triangle or a pair of angles that add up to 180° (which could be the case if they are supplementary angles), we can set up these equations:
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If they are complementary angles (sum equals 90°): \[ 51° + 3x° = 90° \]
To solve for \( x \): \[ 3x = 90° - 51° \] \[ 3x = 39° \] \[ x = \frac{39°}{3} = 13° \]
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If they are supplementary angles (sum equals 180°): \[ 51° + 3x° = 180° \]
To solve for \( x \): \[ 3x = 180° - 51° \] \[ 3x = 129° \] \[ x = \frac{129°}{3} = 43° \]
So depending on the relationship between the angles, \( x \) could be either 13° (if they're complementary) or 43° (if they're supplementary).
Please clarify if there is a specific relationship I'm missing, or if there's additional information about how the angles relate to each other!