4x + 3y - 2x - 7y
2x - 4y
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3x+3-2x=3 x+3=3 x-0
It is an algebraic expression.
When the denominator is a factor of the numerator. If there is 2x in the numerator and denominator these terms cancel.
It is 16y+23x simplified
Twice a number can be represented as 2x, where x is the unknown number. Adding 27 to this expression gives 2x + 27. Therefore, "twice a number plus 27" can be written as the algebraic expression 2x + 27.