David W. answered 03/23/16
Tutor
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Experienced Prof
Word (story) problems use words and phrases that must be translated into concise, precise math expressions (with variables and operations). A translation dictionary is a great help in learning a new language, so make up one:
word MEANS symbol or operation
of *
less than -
is equal =
is at most ≤
is at least ≥
... (add to this list with each new problem)
Translate:
"ten less than a number is at most 6" means
- 10 + x ≤ 6
The math:
re-write: -10 + x ≤ 6
x ≤ 16 [adding +10 to both sides of inequality retains sense of inequality]
This is true for any number less than or equal to 16.