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Division Property of Equality
The Division Property of Equality states that dividing both sides of an equation by the same nonzero number preserves the equality. For any numbers , , and with :
If , then
This property is used to solve equations in which the variable is multiplied by a coefficient. To isolate the variable and "undo" the multiplication, both sides are divided by that coefficient. For example, when solving an equation like , dividing both sides by yields , because and . The restriction is essential because division by zero is undefined.
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OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
OpenStax Elementary Algebra
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