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OpenStudy (anonymous):
7x+4y=13,x+y=1 substitution method
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OpenStudy (nory):
Solve the second equation for one of the variables--let's use y. What equation do you get?
OpenStudy (nory):
y=1-x
OpenStudy (nory):
And then you substitute that into the first equation. You substitute 1-x in for y because 1-x=y.
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