Discussion
Sum of 5x + 3y and 4x - 2y is
Answer: B
Add like terms.
\[ (5x + 3y) + (4x - 2y) = (5x + 4x) + (3y - 2y) \]
\[ = 9x + y \]
The \( y \) terms leave a coefficient of 1, which is written without the digit.
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