loveyou20
loveyou20
31-01-2017
Mathematics
contestada
2x + 6y = 17
2x + 10y = 9
Respuesta :
Mina021
Mina021
01-02-2017
2x+6y=17
2x+10y=9
-4y=8
divide -4 on each side.
y=-2
2x+10 (-2)=9
2x-20=9
add 20 on each side of the equal sign
2x=29
divide 2 on each side
x=14.5
check:
2(14.5)+10 (-2)=9
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