Question

must show work! ② - 142.5÷12

Explanation:

Step1: Perform division operation

$-142.5\div12=-\frac{142.5}{12}$
We can rewrite $142.5$ as $\frac{1425}{10}$, so the expression becomes $-\frac{\frac{1425}{10}}{12}=-\frac{1425}{10\times12}=-\frac{1425}{120}$

Step2: Simplify the fraction

$-\frac{1425}{120}=-\frac{1425\div15}{120\div15}=-\frac{95}{8}=- 11.875$

Answer:

$-11.875$