Question

Which expression is equal to |-12|- |-3|?О-159o 9o 15

Answer 1

9

Step-by-step explanation

Step 1

the absolute value or modulus of a real number x, denoted |x|, is the non-negative value of x without regard to its sig, it means you allways will get a positive number

examples

`\begin{gathered} \lvert5\rvert=5 \\ \lvert-5\rvert=5 \\ \lvert-356\rvert=356 \\ \lvert107\rvert=107 \\ \lvert-107\rvert=107 \\ \text{and so on} \end{gathered}`

Step 2

Apply to solve

`\lvert-12\rvert-\lvert-3\rvert`
`\begin{gathered} \lvert-12\rvert=12 \\ \lvert-3\rvert=3 \end{gathered}`

now, replace

`\lvert-12\rvert-\lvert-3\rvert=12-3=9`

so, the answer is

`9`

I hope this helps you