maths
posted by joshi kratika .
Match them
a (ab) is a rational number 1) distributive property
b) a+0=0+a=a 2) associative property
c) a*(b+c)=a*b+a*c 3) closure property
d) a*b=b*a 4) commutative property
e) a+(b+c)=(a+b)+c 5) additive identity

maths 
MathMate
I believe somewhere in the question says a and b are rational numbers.
What are your thoughts?
If you have no idea, review your notes on the terms on the righthand side.
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