The expression equivalent to x - (-x) + y is 2x + y.
The correct option is (C) None of the above
An expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.)
Given:
x - (-x) + y
=x +x +y
= X(1+1) + y
= x(2) + y
= 2x + y
Hence, the equivalent expression is 2x + y.
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