02-11-2016
Mathematics

contestada

solve by substitution 3y-2x=10 and x=9-2y

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babygirl0328 babygirl0328

02-11-2016

3y-2(9-2y)=10
3y-18+4y=10
-y-18=10
-y=28
y=-28
3(-28)-2x=10
-84-2x=10
-2x=94
x=-47
so x is -47 and y is -28

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