evazquez
30.04.2021 •
Mathematics
A system of equations is shown.
x−y=−8
x+y=4
Which is a method that can be used to eliminate a variable? Select all that apply.
a)Add the terms in the bottom equation to the terms in the top equation to eliminate y
b)Multiply the terms in the bottom equation by 2 and add the resulting terms in the top equation to the terms in the top equation to eliminate x
c)Subtract the terms in the top equation from the terms in the bottom equation to eliminate x
d)Multiply the terms in the bottom equation by 4 and subtract the resulting terms in the bottom equation from the terms in the top equation to eliminate y
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Ответ:
y(y+4)-y=6
y2+4y-y2
y2_y2+4y
4y=6
false