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OpenStudy (anonymous):
Solve the system of equations by substitution. What is the solution for x? 2x + y = 1 4x + 2y = -1
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OpenStudy (jack1):
rearrange 2x + y = 1 into y = 1 - 2x then sub into 4x + 2y = -1
OpenStudy (jack1):
4x + 2y = -1 4x + 2(1 - 2x) = -1 can you solve from here...?
OpenStudy (anonymous):
yes thank you
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