# 7.2.4. Adding and Subtracting Algebraic Expressions

Subtract from .

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Subtract from .

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Subtract from the sum of and .

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Subtract from .

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If , , and , find the expression in terms of , , and .

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Add , , and , then subtract the result from .

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Subtract from .

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The distance between two cities is km. A passenger covered a distance of km of it. Find the remaining distance in terms of .

• A km
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• D km
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If and , evaluate in its simplest form.

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The perimeter of a triangle is and the length of two of its sides are and . Find the length of the third side in terms of and .

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If and , find the value of .

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The perimeter of a triangle is and the length of two of its sides are and . Find the length of the third side in terms of .

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By how much does exceed ?

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Find the perimeter of the rectangle whose dimensions are and , and find the value of the result when .

• A, 44 length units
• B, 26 length units
• C, 34 length units
• D, 68 length units
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Find the expression that when subtracted from the sum of the two expressions and the result equals the remainder of subtracting from .

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