Question

| 10 - 7 | over 4 - | -15 + 8 | over 6simplified

Answer 1

Start from

$\dfrac{|10-7|}{4} - \dfrac{|-15+8|}{6}$

Perform the additions inside the absolute values:

$\dfrac{|3|}{4} - \dfrac{|-7|}{6}$

The absolute value does nothing to positive numbers, while it switches the sign of negative numbers, so |3|=3 and |-7|=7:

$\dfrac{3}{4} - \dfrac{7}{6}$

Transform both fractions so that they have the same denominator:

$\dfrac{9}{12} - \dfrac{14}{12} = \dfrac{-5}{12}$