Question

xy =6 3x+2y=1 2 9x+4y=?​

Answer 1

Answer:

30

Step-by-step explanation:

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Answer 2

Answer:

9x+4y=30

Step-by-step explanation:

xy =6

x=6/y

3x+2y=1 2

3(6/y)+2y=1 2

multiplying by y

18+2y²=12y

2y²-12y+18=0

y²-6y+9=0

y²-3y-3y+9=0

y(y-3)-3(y-3)=0

(y-3)(y-3)=0

(y-3)²=0

(y-3)=0

y=3

x=6/y

x=6/3

x=2

so

9x+4y=9(2)+4(3)

9x+4y=18+12

9x+4y=30