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OpenStudy (anonymous):
Solve the system of equations by the addition method. Choose one answer. a. (4, 9) b. (9, 4) c. infinite number of solutions d. no solution
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OpenStudy (anonymous):
OpenStudy (anonymous):
the property is: if a=b and c=d, then a+c=b+d. therefore 4x+y+(4x-y)=25+7=8x=32 thus x=4 by subsitution y=9 Therefore the answer is A. :)
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