Question 625464
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You were given:
{{{x+4y=-8}}}
{{{x-4y=-8}}}
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Use the second equation for the substitution.
{{{x-4y=-8}}}
{{{x=4y-8}}}
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Substitute x with 4y-8
{{{(4y-8)+4y=-8}}}
{{{8y=-8+8=0}}}
{{{y=0}}}
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Look for the value of x by substituting y with 0
{{{x+4(0)=-8}}}
{{{x=-8}}}
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So <b> x=-8 and y=0</b>