Collect Like Terms
1x+2x
3x
Make an equivalent expression for 2x
x+x
What is the black chip from the chip model represent?
Positive numbers
What is an inequality?
What does equivalent mean?
The same or equal.
2x+7y+8x
10x+7y
Write an equivalent addition expression 5x+ 2y.
x+x+x+x+x+y+y
Show -2 + -2 on the chip model.
There should be 4 red chips left.
x<2
There should be an open circle on 2 pointing to the left.
What does PEMDAS stand for?
Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction
18y+5z+3x+10y+4x
28y+5z+7x
Write an equivalent addition expression for 20x-8y.
10x+10x-10y+2y
Show 8+-4 using the chip model.
4 black chips should be left.
Graph x<-7 on the number line
There should be an open circle above -7 pointing to the left.
Solve: 5x-2=23
5
30x+5y+5x+16z+30x+5y+4z
60x+10y+20z
Using multiplication, create an equivalent expression for 45x- 30y
9(5x)- 5(6X)
Show 5-7 using the chip model
There should be 2 red chips left.
solve: 2x-4>4
-Add 4
-Divide by 2
-Answer x>4
solve: -3(4x+2)
-12x+-6
20x+17y+6y+25z+2+5y+18z
20x+28y+43z+2
Mouna is buying 100 pencils and 25 notebooks for Ms. Beason's 7th grade class. Let p represent the cost of pencils and n represent the cost for notebooks. Create an expression for this problem.
100p+25n
Show -10--4 using the chip model.
There should be 6 red chips left.
solve and graph: 2x-4<4
-Add 4
-Divide by 2
-Answer x<4
-Circle should be above 4 pointing to the left
solve: $42.56 x 5%
$44.69