9x+3y+12=0
18x6y+24=0
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Step-by-step explanation:
9×+3y+12=0
9×+3×=12
12×=12
×=12÷12
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Answer:
2(9x+3y+12)=0
1(18x+6y+24)=0
_____________
18x+6y+24=0
18×+6y+25=0
_____________
-1=0
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