So which operation do you use when? They let you look at an equation, instead of just reading it. Com re-group your equations You can re-group your equations The associative property lets you change the grouping of numbers in addition or multiplication operations. When we isolated the variable, how did you know to subtract before you divided? Think about how you think.

Be careful, some of the names are used twice! How does a bunch of dots help me? So this stays over here on the left.

Com associative practice Your job was to solve both sets of problems, see if the answers came out the same, and figure out why you got the results you did. Com there are girls now v Use the information about cost per guy and the information about cost per girl to write up the new equation we need to solve to figure out who can come. Your job is to make equations from the magnets that say the same thing as the word problems. Substitution uses your solution in the original equation Equation training Jo has an awesome setup! Equationcross Take some time to sit back and give your right brain something to do. But when it comes to Algebra, rules are a good thing. When can you drop the parentheses?

Check that you got the right answer by plugging your answer back into your equation and making sure things are equal. The big unknown in this problem is how many friends Paul can bring. That means the exponents have to be simplified before they can be combined with something else. Com how to use this book Read Me This is a learning experience, not a reference book. Why use exponents and not just multiplication?

So are fractions really division, or can you leave fractions alone? Fortunately, we can turn these rules into some simple equations. Is the graph of the equation the line or the points? Equations and expressions are written to communicate an order. You have to solve expressions with subtraction and division as written.

Com more complicated equations Wow - much better. You put together a equation to say how things relate to each other in terms of the variable. Com more complicated equations Multicross Solution Take some time to sit back and give your right brain something to do. Remember that exponents are a shorthand for multiplication.

It was established by early mathematicians geeky people who do Algebra for fun who were trying to compare their work. Book Description Having trouble understanding algebra? What if I see a radical without an index number? Better still, try to explain it out loud to someone else. Com more complicated equations I think we should have the same number of girls as guys. Substitution means putting a new value back into the original equation.

Edward mows each yard once a week. That makes sense, because justtota guys.

Any number raised to one is itself. Com more exponents Equation Construction Solution Since Movie Podcast is going to take away hits, how many will be left?

The math term that describes opposite operations is inverse operations. But we can put two guys in each room. 