Question

2x+3y=12,
x+3y=9 substitution method​

Answer 1

Answer:

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Answer 2

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Question - 2x+3y=12,

x+3y=9 substitution method

Answer -

2x+3y=12 - - - - - - - - 1st eqyatuon

X+3y=9------------------2nd equation

Now

Shift a term to find the value of one term

I am shifting Y to rhs in 2nd equation

X=9-3y--------- 3rd equation

Bow put 3rd equation in first equation

2(9-3y)+3y=12

18-6y+3y=12

-3y=12-18

-3y=-6

Therefore

Y=2

Now put the value of Y in 2nd equation

X+3(2)=9

X+6=9

X=3

Therefore

X=3 and y=12

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