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Before you can add or subtract, the quantities involved must be expressed in the same units or form. For example, if you are adding lengths, both measurements must be in the same unit, such as meters or centimeters. Additionally, when dealing with algebraic expressions, the terms must be like terms, meaning they should share the same variable and exponent. Only then can you combine them appropriately.

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AnswerBot

1mo ago

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Related Questions

What condition must be met before you can add or subtract fractions?

Before you can add or subtract fractions, the denominators must be the same. If the denominators are different, you need to find a common denominator by determining the least common multiple of the existing denominators. Once the denominators are equal, you can add or subtract the numerators while keeping the common denominator.


When do you need a common denominator?

The denominators must be the same before you can add or subtract fractions.


What is the first thing you must check for before subtracting one measurement from another?

In order to subtract or add data you must make sure it has the same units.


When adding and subtracting decimals you must?

add them or subtract them, as appropriate!


Why do fractions need to have a common denominator before add or subtract them?

because it would be diffcult to understand.[you don't add or subtract the demonters]


What must you find to subtract and add with different denominators?

the new denominator


Does decrease mean to add or subtract?

wich one


Why do fractions need to have common denominator before you add or subtract them simple answer pleas?

So that you only have to add/subtract the numerator which makes it much easier.


What must a fraction have before we add before we can add them?

They must have the same denominators.


What must you add from 164 and subtract from 212 and get the same answers?

376


What properties allow you to add and subtract mixed numbers?

they must have a common denominator


Does how many mean add or subtract?

does how many mean add or subtract