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Any "expression" that represents a numeric value. Example: 2+2=4 or x+7=10. Actually the examples above are equations, not expressions. Expressions do not have = signs. 7a and 4x are examples.

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A mathematical expression is a series of mathematical terms with no equals sign, e.g
3x-2y+4
is a mathematical expression.
You can evaluate a mathematical expression like this,
3x+2x
becomes 5x, so what you are effectively doing is simplifying the expression. Hope that helps.
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13y ago
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Q: What is a mathematical expression?
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