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Leah Ch.2

Commutative Property a+b=b+a and ab=ba order doesn't matter
Associative Property a+ (b+c) = (a+b)+c and a(bc)= (ab)c grouping doesn't matter
Identity Property a+0=a and 1(a)=a The number added or multiplied that allows me to get back to the original #
Distributive Property a(b+c)= ab+ac
term any number or variable connected by the addition or multiplication symbol
Like terms terms that contain the same variable(s)
Variable term any term that contains a variable
Numeric term any term only made up of numbers
Constant a term that has no variable
Open sentence an equation that contains a variable
Inequality mathematical statement containing <,>, ≠, ≤,≥
Open Circle number not included in our answer <,>
Closed circle the number is included in our answer =, ≤,≥
Solving equations Inverse of adding/subtracting and inverse of multiplication/dividing
Solving inequalities when we multiply or divide by a negative number, we reverse the inequality sign
-x means -1x
x means 1x
2x-3y+5-5x+2y-8 2x+(-5x) -3y+2y 5-8 -3x -1y -3 -3x-1y-3
3(2x-4) 3(2x) 3(-4) 6x-12
-(2x-4) -1(2x) -1(-4) -2x+4
3(2x-4)-3(x-2) 3(2x) 3(-4) -3(1x) -3(-2) 6x-12-3x+6 3x-6
Created by: wimmerleah