what and what are combined by the operation addition and subtraction to construct an algebric expression
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Step-by-step explanation:
When we add (or subtract) two algebraic expressions, the like terms are added (or subtracted) and the unlike terms are written as they are. To find the value of an expression, we substitute the values of the variables in the expression and then simplify.
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Answer:
When we add (or subtract) two algebraic expressions, the like terms are added (or subtracted) and the unlike terms are written as they are. To find the value of an expression, we substitute the values of the variables in the expression and then simplify.
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