$$\frac { 15 } { 4 } - 7 x = 9$$
$x=-\frac{3}{4}=-0.75$
$$-7x=9-\frac{15}{4}$$
$$-7x=\frac{36}{4}-\frac{15}{4}$$
$$-7x=\frac{36-15}{4}$$
$$-7x=\frac{21}{4}$$
$$x=\frac{\frac{21}{4}}{-7}$$
$$x=\frac{21}{4\left(-7\right)}$$
$$x=\frac{21}{-28}$$
$$x=-\frac{3}{4}$$
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