addition associative
addition commutative
add assoc
distributive of mult over add
mult comm
Identify the property or rule that justifies each step in the calculation.
4/7k+(j+1/7k) ____________
4/7k+(1/7k+j) ___________
(4/7k+1/7k)+j _____________
k(4/7+1/7)+j _________________
5/7k+j ___________
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