0
1x - 1x should be written as
x - x
the answe is '0' zero.
x-x = 0
NB In algebra 'x' or another letter, as an unknown ,but fixed amount. Its like saying
2 - 2 = 0 or 3 - 3 = 0 or 9 - 9 = 0
Instead of writing number(s) all the time, in algebra a letter is used to indicate all values, and the calculation is made once only.
NNB In algebra the coefficient '1' is NEVER used. So '1x' is incorrect. so 'x' on its own indicates that there is only 'one' of 'x'.
lenpollock
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Is it el algebra or la algebra in spanish?
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