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Use a property of equality to solve each equation. Then check the result. See Example 7 .$$5 y=45$$
$y=9$
Precalculus
Algebra
Chapter 2
Equations, Inequalities, and Problem Solving
Section 1
Solving Equations Using Properties of Equality
Algebra Topics That are Reviewed at the Start of the Semester
Equations and Inequalities
Missouri State University
Baylor University
Idaho State University
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solve the equation and check the solution. Five y equals 45 toe. Isolate the variable. We need to undo the multiplication by dividing both sides by five. Why is equal to 45 divided by five? Why equals nine? To check the solution, substitute nine into the original equation for why, and see if it's a true statement. Is five times nine equal to 45. Five times nine is 45. 45 equals 45. Why equals nine?
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