Cool math fractal

math image

math image

pre-algebra help lessonsalgebra help lessonsprecalculus / calculus help lessonsmath anxiety survival guidegeometry math artmath and jigsaw puzzlesCoolmath booksother math stuff
math help lessonsmath practice problemsmath gamesmath dictionarygeometry trigonometry reference area
teacher's areaparent's areaCoolmath 4 kidsSpike's Game ZoneFinance FREAKTotally Stressed OutScience Monster
Coolmath Algebra
Solving Equations Lesson 4 - What to Do - Putting Parts 1 & 2 Together   (page 2 of 3)
---- This algebra lesson explains how to solve an equation when you need to add or subtract something from both sides AND multiply and/or divide by something.

math image
Now available: Coolmath Algebra books! Part 1, Part 2 and Part 3 covering the Algebra you need from Algebra 1 through Precalculus Algebra (Beginning Algebra through College Algebra)

other Coolmath Books: Coolmath Precalculus Review (the math you really need to survive Calculus 1) and Math Survival Guide (How to conquer math and deal with math anxiety)
line
Graphing Calculator Scientific Calculator << a new window will open for these
line

Check it!

2x - 7 = 3 ... 2(5) - 7 = 3 ... 3 = 3

 Yep!

YOUR TURN:

Solve          3x + 8 = -7          *And check it!

Here's one with a bit of a twist:

Solve    6 - x - 6 = 7 - 6 which gives -x = 1

 

Ditch the 6:

x isn't quite alone yet!
Multiply both sides by -1:

 (-1)(-x) = (1)(-1) which gives x = -1
 

OK, so what if there are x's on both sides?

9 - 3x = 5x + 6

Here's the game:

Get all x guys on one side and all number guys on the other.

*Ditch the smallest x guy first!  (Trust me.)

Continued on the next page

 The printing and distribution and/or downloading of these lessons is strictly prohibited.
line
Graphing Calculator Scientific Calculator << a new window will open for these
line

.....:::::::::::::::  HELP SUPPORT COOLMATH  :::::::::::::::.....
:::::::  link to us   :::::::   advertise with us  :::::::  why we have ads  :::::::

Thanks for visiting Coolmath.com
© 1997-2010 Coolmath.com, Inc.