Question

By substitution method solve : x/3 + y/4 =6 , x/6 + y/2 = 6​

Answer 1

Answer:

Answer already given in image....

Answer 2

Answer:

1) (4x+3y)/12=6

4x+3y=6*12

4x+3y=72

2)2x+6y/12=6

2x+6y=72

from1)

4x+3y=72

x=72-3y/4

substitute in 2)

2x+6y=72

2(72-3y/4)+6y=72

72-3y/2+6y=72

72-3y+12y/2=72

72-3y+12y=72*2

9y=36-72

9y= -36

y=-36/9

y= -4

substitute in 1)

4x+3y=72

4x+3(-4)=72

4x-12=72

4x=72+12

4x=84

x=84/4

x=21

I hope you understand

x=21,y= -4

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