Mathematics

In the given figure, the value of $$x$$ that will make $$AOB$$ a straight line is


ANSWER

$$x=36$$


SOLUTION
$$AOB$$ will be a straight line if,
$$3x+15+2x-15^{0}=180^{0}$$
$$\Rightarrow 5x=180^{0}$$
$$\Rightarrow x=36^{0}$$
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