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When you put the number in place of the variable (like maybe the 'x' or the 'y')

wherever the variable occurs in the equation, and the statement you get out of all

the numbers you have is not true, then you know the number is not a solution.

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Q: How do you know when a number is not a solution of an equation?
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Related questions

What is A number that makes a equation true?

The solution set is the answers that make an equation true. So I would call it the solution.


Explain how you an determine if the number is a solution of an equation?

Substitute the number in the equation. If the resulting statement is true the number is a solution to the equation.


Why do we represent the solution to an inequality with a graph on a number line but we don't do the same for the solution to an equation?

An equation has an equal sign, which means that we know what the variable is equal to :)


How do you know if a value a is a solution to an equation?

If this value a satisfy the equation, then a is a solution for that equation. ( or we can say that for the value a the equation is true)


A value that makes an equation true?

Any number that makes an equation true is a 'solution of an equation'. it is a solution


Number that makes an equation true?

A number that makes an equation true is its solution.


What is the word for a number that makes an equation true?

Solution. A solution of an equation is a number that satisfy the equation. This means that if you replace this number on the equation and check it, the equation will be true. When you solve an equation you can find some roots, but not all of them satisfy the equation. Thus always check your answers after resolving your equation, and eliminate as solution the answers that don't make the equation true or undefined.


How do you know if an equation is equivalent?

An equation is equivalent to another equation, if they have the same solution.


When can you say that a number is called a solution in algebraic expression?

An algebraic equation or inequality can have a solution, an algebraic expression cannot. If substituting a number in place of a variable results in the equation or inequality being a true statement, then that number is a solution of the equation or inequality.


How do you determine whether a number is a solution of an equation?

Substitute the value found back into the equation, evaluate the expressions and see if the resulting equation is true.


The number that makes an equation true?

The solution


Which number is not a solution of -7y plus 1975?

" -7y plus 1975 " is not an equation, it doesn't ask any question, and it needs no solution. It's just an expression that stands for a number. There's no way to know what number it stands for until you know what number 'y' is.