Combining Like Terms
x - 7 + 8x
9x - 7
(6 x 2) + 3
15
Define Variable
Variable is a placeholder, generally a letter.
2(2x + 4)
4x + 8
x + y - z ; use x = 2, y = 2, z = 1
3
2x + 8 - x - 9
x - 1 or x + -1
2(12/3 + 4)
16
Define Distribute
To give out... In math, mainly used for multiplication.
6x - 9 or 6x + -9
15
-4x + 17 - 2x - 5
-6x + 12
Define Expression
NO EQUAL SIGN.
-9(2x - 3z)
-18x + 27z or -18x + 27z
h + 3j ; use h = 2, j = 2
8
-x - y + 3x - z
2x - y - z or 2x + -y + -z
(6 + 4 - 2)2 / 8
8
Define Simplify
To break down, get an expression to the smallest form.
6(x - y + 7)
6x - 6y + 42 or 6x + -6y + 42
3x(x + y) ; use x = 2, y = 6
48
-3x + 7y - 8z + 5x - 5y - 5z
2x + 2y - 13z or 2x + 2y + -13z
((8(4/2))/8)2 / 2
2
Define Reciprocal
The opposite, flipped
-5(-2x + -3y - 5z)
10x + 15y + 25z
22