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OpenStudy (ccchristian1):
A student is trying to solve the system of two equations given below: Equation P: y + z = 6 Equation Q: 8y + 7z = 1 Which of these is a possible step used in eliminating the y-term? (y + z = 6) ⋅ −8 (y + z = 6) ⋅ 7 (8y + 7z = 1) ⋅ 7 (8y + 7z = 1) ⋅ 8
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OpenStudy (ccchristian1):
@pooja195
OpenStudy (anonymous):
a
pooja195 (pooja195):
Opposites cancel
OpenStudy (ccchristian1):
so a ?
pooja195 (pooja195):
yes -.-
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OpenStudy (ccchristian1):
okay thanks
OpenStudy (anonymous):
It's a because you multiply the first equation by -8 which cancels out y
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