Question

Substitution method 3x+y=4,2y+5x=10​

Answer 1

Answer:

5x−2y=10 ------- (1)

4x−6y=3------ (2)

From equation 1:-

2y=10−5x

2y=−10+5x$Y =\frac{-10+5x}{2}$$

Substitute the value of y in equation 2:

4x−6y=3

4x6(

2

−10+5x

)=3

4x3(−10+5x)=3

4x+3015x=3

−11x=3−30

−11x=−27

X=

11

27

Now, Substitute x=

11

27

in equation 1:

5(

11

27

)−2y=10

11

135

2y=10

13522y=10x11

135110=22y

25=22y

Y=

22

25

Therefore the solution is:X=

11

27

and Y=

22

25

Answer 2

Answer:

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