Answers

2015-12-10T20:12:28+08:00
What does the x represent? times or variable?

If times, it's three times negative two equals to negative four
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It seems variable o.O she's junior high and sure her teacher would use period/dot/ (.) or parenthesis for multiplication :D
and also it must be 3 x (-2) = -4 if x represents multiplication :D
2015-12-10T20:51:29+08:00
Thrice a number less than two is equal to negative four.
Thrice a number subtracted by two is equal to negative four.
Thrice a number and two has a difference of negative four.

Those three are some examples :D I suggest you to memorize the verbal translations. It's easy anyway :)
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