Question 1120288
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<pre>
Since the triangle RTS is congruent to triangle HFG (as it is given !), it implies that


|RT| = |FH|,   or


4x + 2 = x + 14,

4x - x = 14 - 2,

3x = 12    ====>  x = {{{12/3}}} = 4.
</pre>

Solved.