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Alg 2 Properties

Commutative addition and Multiplication 2+3=3+2 3x2=2x3
Associative addition and multiplication (4+3)+2=4+(3+2) (3x4)x2+3x(4x2)
Identity of addition and multiplication 4+0=4 2x1+2
Inverse of addition and multiplication 4+-4=0 4x(1/4)=1
addition of equality 12-3=4; 12=7
subtraction of equality 15+6=10; 15=4
multiplication of equality 5/10=7; 5=70
division of equality 10x25=100; 10=4
distributive a(b+c)=ab+ac
substitution 5y=12-2y=18; 3y=12=18
reflexitive -3+y=-3+y
symmetric y=7; 7=y
transitive a=b and b=c, then a=c
Created by: ellison