The angles of triangle are $(3 x)^{o}, (2 x - 7)^{o}, a n d (4 x - 11)^{o}$ . Find $x$

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Solution

The angles of the triangle are $3 x$ , $2 x - 7$ and $4 x - 11$
Sum of the angles of triangle = 180
$3 x + 2 x - 7 + 4 x - 11 = 180$
$9 x - 18 = 180$
$9 x = 198$
$x = 22^{\circ}$
Thus, the angle are $66^{\circ}, 37^{\circ}$ and $77^{\circ}$

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