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OpenStudy (anonymous):
In solving the following system by the substitution method, select the one step which could occur. 4x+3y=38 x+y=15 A. 4x+3y=x+y B. 4x+3(15-x)=38 C. 4x+3(15-x)=15 D. 4x+3(x-15)=38
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OpenStudy (jojomojo):
THE ANSWER IS: b
OpenStudy (campbell_st):
take the 2nd equation and rewrite it x+ y = 15 becomes y = 15 - x substitute this into the 1st equation
OpenStudy (jojomojo):
i am unreliable answerer :o
OpenStudy (campbell_st):
the answer isn't D
OpenStudy (jojomojo):
Muahaha:3 I am smart after all.
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OpenStudy (campbell_st):
one of the suggestions of Open Study... is to assist in understanding and not just give answers..
OpenStudy (jojomojo):
I deeply apologize
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