Combine Like Terms
Simplify:
2x + 3 + x + 5
3x + 8
Solve for x:
5x - 12 = 8
x = 4
Solve for x:
4(x+2)=24
x = 4
A mathematical statement WITH an equal sign.
Equation
Why was 6 afraid of 7?
Because 7, 8, 9!
Simplify:
4x - 12 - 2x + 8
2x - 4
Solve for x:
8x - 15 = 25
x= 5
Solve for x:
3(x - 8) = 6
x = 10
The letter in a mathematical statement (unknown number)
Variable
Why did the two 4's skip lunch?
Because they already 8!
Simplify:
-8x - 15 + 3x + 4
-5x - 11
Solve for x:
13x - 43 = 100
x = 11
Solve for x:
3x + 2 = 5x − 10
x = 6
The number that sits directly in front of the variable.
Coefficient
How do you turn seven into an even number?
Remove the s!
Simplify:
-23x - 15 - 3x - 2
-26x - 17
Solve for x:
12x + 85 = -131
x = -18
Solve for x:
2(x − 3) = 3(x + 1)
x = -9
The number in a mathematical statement that DOES NOT have a variable attached
Constant
Why was the math book sad?
He had too many problems :(
Simplify:
13x + 4 - 18x - 12
-5x - 8
Solve for x:
3x + 40 = 34
x = -2
Solve for x:
4x − 7 = 3(x + 2)
x = 13
To add or subtract numbers or variables together to make the expression simpler.
Combine like terms
Which tree do math teachers love?
Geome-tree!