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------------------------------------------------ Write the sentence as an equation:

139 is equal to 392 less than [tex]m[/tex].

Equation:

[tex]139 = m - 392[/tex]

To write the sentence as an equation, let's follow these steps:

1. Identify the unknown value: The unknown number is represented by [tex]$ m $[/tex].

2. Translate the words into mathematical symbols:
- The phrase "139 is equal to" translates to [tex]$ 139 = $[/tex].
- The phrase "392 less than [tex]$ m $[/tex]" translates to [tex]$ m - 392 $[/tex].

3. Combine the parts: Putting it all together, the sentence "139 is equal to 392 less than [tex]$ m $[/tex]" can be written as the equation:
[tex]\[
139 = m - 392
\][/tex]

4. Solve for [tex]$ m $[/tex]:
- To find the value of [tex]$ m $[/tex], you need to isolate [tex]$ m $[/tex] on one side of the equation. To do this, add 392 to both sides of the equation:
[tex]\[
139 + 392 = m
\][/tex]
- Simplify the left side:
[tex]\[
531 = m
\][/tex]

So, the value of [tex]$ m $[/tex] is 531.