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OpenStudy (ledah):
Solve the system using substitution. 2x + y = 7 x – y = 5
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OpenStudy (anonymous):
x=4 y=-1
OpenStudy (ledah):
What is the solution for x? a)-4 b)-1 c)1 d)4
OpenStudy (anonymous):
d
OpenStudy (anonymous):
it is ok?
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