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Mathematics 20 Online
OpenStudy (anonymous):

Solve the proportion. x+3/4 = 9/x+3 A. 3 or -3 B. 3 or -9 C. 9 or -9 D. 18 or -8

jhonyy9 (jhonyy9):

from A just , only 3 because for -3 the denominator x+3 is zero and than the fraction is not availably

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