Question 443159

{{{5x+3y=-1}}}........1
{{{x+y=1}}}..........2
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{{{x+y=1}}}.........solve for {{{y}}}

{{{y=1-x}}}..........plug in 1

{{{5x+3(1-x)=-1}}}........1

{{{5x+3-3x=-1}}}

{{{2x=-1-3}}}

{{{2x=-4}}}

{{{highlight(x=-2)}}}.......now find {{{y}}}

{{{y=1-x}}}

{{{y=1-(-2)}}}

{{{y=1+2}}}

{{{highlight(y=3)}}}