Question

Identify the expression that is not equal to the other three. Explain your reasoning

15-|-5|
|-4|+6
-|7+3|
|-10|

Answer 1

`-\left|7+3\right|`

Explanation:

Solve each expression and then compare the results

case 1) we have

`15-\left|-5\right|\\ \\=15-(5)\\ \\=10`

case 2) we have

`\left|-4\right|+6\\ \\=(4)+6\\ \\=10`

case 3) we have

`-\left|7+3\right|\\ \\ =-(7+3)\\ \\=-10`

case 4) we have

`\left|-10\right|\\ \\ =-(10)\\ \\=10`