Transcript Now Some MORE steps…

Now Some MORE steps…
Belinda Oram
What happens if the equation is
not simple?
We SIMPLIFY first and then solve!
3 x  2  x  12
3 x  2  x  12
Think of TILES to simplify
Put the x tiles together and remove any that cancel out.
Rewrite the formula and solve.
2 x  2  12 -2
-2
2 x  10 = 5
2
2
Simplify and Solve
You may use tiles to simplify if you wish.
2 x  3  x  1  11
Senteo Question
To set the properties right click and select
Senteo Question Object->Properties...
How do we solve this?
3( x  2)  12
Again, think
of tiles.
3x
( )( )( )
Means 3 sets of these tiles
Put like tiles together
Result?
3 x  6  12
NOW SOLVE!
Solving the Same Equation
Mathematically
You must
multiply
everything
inside the
bracket by
the number
outside the
bracket.
3( x  2)  12
3 x  6 = 12
Now solve as usual!
Now Some Practice
Enter your answers into your
responders as you solve each to
make sure you are “getting” it.
Show your work on your handout!
CHECK
Now what happens if you have a
variable (letter) on both sides?
3x  2  x  8
Take a deep breath and realize that there is just ONE
MORE STEP and you already know how to deal with it!
You still have to get all the numbers on one side of
the equation and all the letters on the other.
Start as you
usually would.
3x  2  x  8 - 2
-2
Rewrite
Now you have to get
rid of the x on the
right side of the
equation.
Solve by dividing
both sides by 2
3 x  x  10
x x
2 x  10
2
2
Rewrite again
x  5
Put the steps of solving this
equation in the right order.
2 x  4  2 x  12
• Divide both sides by 4
• Add 2x to both sides
• Add 4 to both sides
Check