I need help
Subtracting an expression is equivalent to adding the opposite of a positive.
This is related to the whole "plus and adjust" concept. Subtracting negative expressions is like adding them, so subtraction is like adding the opposite of a positive.
What is the value of y, in terms of x, if x + y = 15?
Y = 15 - x.
This is found by subtracting x from both sides in order to get y alone. (X - X = 0, just as 1 - 1 =0)
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