Problem: What if you had an equation written like x + (-4)= 8? Solution: Remember that a plus negative is the same as subtraction, so we could rewrite our equation as a -4 = 8. Now it is easy to tell what we would need to do to solve, use the Addition Property of Equality to add 4 to both sides. *4=8 x 4+4=8+4 - x = How about a problem that looks like this: - (-4)= 8? Is it the same as the problem above? This problem is subtracting a negative which is actually the same as adding a positive. You may have heard the phrase "Keep, Flip, Change". We keep & the same, flip the negative sign to a +, and change the -4 to a 4. Now we have x + 4 = 8 and can easily solve this equation for a by using the Subtraction Property of Equality. x + 4 = 8 x+4 = 8 x = Equations that take one step to isolate the variable are called one-step equations. Such equations can also involve multiplication or division.
Problem: What if you had an equation written like x + (-4)= 8? Solution: Remember that a plus negative is the same as subtraction, so we could rewrite our equation as a -4 = 8. Now it is easy to tell what we would need to do to solve, use the Addition Property of Equality to add 4 to both sides. *4=8 x 4+4=8+4 - x = How about a problem that looks like this: - (-4)= 8? Is it the same as the problem above? This problem is subtracting a negative which is actually the same as adding a positive. You may have heard the phrase "Keep, Flip, Change". We keep & the same, flip the negative sign to a +, and change the -4 to a 4. Now we have x + 4 = 8 and can easily solve this equation for a by using the Subtraction Property of Equality. x + 4 = 8 x+4 = 8 x = Equations that take one step to isolate the variable are called one-step equations. Such equations can also involve multiplication or division.
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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