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OpenStudy (anonymous):
Additive identity or substitution property?
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OpenStudy (anonymous):
Given: 3(x – 4) = 33 Prove: x = 15
OpenStudy (anonymous):
3x + 0 = 45
OpenStudy (anonymous):
@agent0smith
OpenStudy (agent0smith):
Substitution property, plug in 15 in place of x
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