By Jund, Barbara
For brand spanking new algebra scholars or these looking a refresher, this e-book bargains a chain of easy 20-step lesson plans that emphasize speedy studying of sensible, crucial abilities. This up-to-date variation eschews pointless jargon and will get all the way down to the necessities: • assurance of all very important algebra abilities, from combining like phrases to fixing quadratic equations • hundreds and hundreds of perform routines, together with notice difficulties • An emphasis at the applicability of algebra abilities to real-world (and real-work) difficulties • Bonus sections, together with assistance for getting ready for standardized exams
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Additional resources for Algebra Success In 20 Minutes A Day (Skill Builders), 2nd Edition
4(60 + x) = 300 Use the distributive property. 240 + 4x = 300 Subtract 240 from both sides of the equation. 240 – 240 + 4x = 300 – 240 Simplify both sides of the equation. 4x = 60 4x 60 ᎏ4ᎏ = ᎏ4ᎏ Divide both sides of the equation by 4. Simplify both sides of the equation. x = 15 miles per hour 49 Team-LRN – SOLVING EQUATIONS WITH VARIABLES ON BOTH SIDES OF THE EQUATION – 36. A corporation pays ᎏ21ᎏ of the health insurance premium and an additional $200 a month toward other benefits such as dental insurance.
Skill Building until Next Time When you balance your checkbook, you are working with positive and negative numbers. Deposits are positive numbers. Checks and service charges are negative numbers. Balance your checkbook using positive and negative numbers. 19 Team-LRN Team-LRN L E S S O N 2 Working with Algebraic Expressions LESSON SUMMARY In this lesson, you will use the same rules of signs that you learned in the previous lesson for any number—including fractions—not just integers. You will find out how to simplify and evaluate expressions and see how using the order of operations can help you find the correct answer.
Let’s look at another equation: x – 5 = 9. What do you need to do to get the variable on a side by itself? You need to get rid of the 5. The equation says to subtract 5, so what undoes subtraction? If you said addition, you are right! In this problem, you need to add 5 to both sides of the equation to get rid of the 5. Example: x – 5 = 9 Add 5 to both sides of the equation. Simplify both sides of the equation. Add 0 to x. x–5+5=9+5 x + 0 = 14 x = 14 Example: a + 6 = 7 Subtract 6 from both sides of the equation.
Algebra Success In 20 Minutes A Day (Skill Builders), 2nd Edition by Jund, Barbara