Hattie rewrote the equation as shown:
9n + 7 - 2n = 4 (-n + 5) - 3n
9n + 7 - 2n = - 4n + 20 - 3n
Which property did she use to rewrite the equation?
A.
addition property of equality
B.
distributive property
C.
multiplication property of equality
D.
substitution property
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