Sam1300
Sam1300
02-03-2015
Mathematics
contestada
X+3y=5
-2x-6y=-10
Solve using elimination
Respuesta :
apologiabiology
apologiabiology
02-03-2015
slimination
multiply first equaiton by 2
2x+6y=10
add to second equiaotn
2x-2x+6y-6y=10-10
0=0
this is true so therfor they are the same equaiton
so solve
x+3y=5
3y=-x+5
y=-1/3x+5/3
subsituter values for x and get valuse for y
if x=2 then y=1
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