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OpenStudy (anonymous):
Which equation is an identity? a. 8-(5x+2)=-5x-6 b. 7z+10-z=8z-2(z-5) c. 8m-4=5m+8-m d. 6y+5=6y-5
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OpenStudy (mathmale):
In other words, which equation is always true, regardless of the value of the variable?
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