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OpenStudy (anonymous):
how to solve for substitution. check your answer. y=8-x and 7=2-y
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OpenStudy (anonymous):
well, let's start with the second equation 7=2-y
OpenStudy (anonymous):
what could y be?
OpenStudy (anonymous):
7
OpenStudy (anonymous):
7 = 2 - (-5)
OpenStudy (anonymous):
so y = -5
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OpenStudy (anonymous):
now you can plug in -5 for y in the first equation
OpenStudy (anonymous):
is that the answer for the first one
OpenStudy (anonymous):
hello
OpenStudy (anonymous):
no
OpenStudy (anonymous):
-5 = 8 - x
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OpenStudy (anonymous):
what is x
OpenStudy (anonymous):
-5
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