$$(7/9-11/12) \times (36/6+24/7)$$
$-\frac{55}{42}\approx -1.30952381$
$$\left(\frac{28}{36}-\frac{33}{36}\right)\left(\frac{36}{6}+\frac{24}{7}\right)$$
$$\frac{28-33}{36}\left(\frac{36}{6}+\frac{24}{7}\right)$$
$$-\frac{5}{36}\left(\frac{36}{6}+\frac{24}{7}\right)$$
$$-\frac{5}{36}\left(6+\frac{24}{7}\right)$$
$$-\frac{5}{36}\left(\frac{42}{7}+\frac{24}{7}\right)$$
$$-\frac{5}{36}\times \frac{42+24}{7}$$
$$-\frac{5}{36}\times \frac{66}{7}$$
$$\frac{-5\times 66}{36\times 7}$$
$$\frac{-330}{252}$$
$$-\frac{55}{42}$$
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$-\frac{55}{42} = -1\frac{13}{42} = -1.3095238095238095$
