Question

solve the set of simultaneous equations : 3x+y=6; 2x+4y=4​

Answer 1

Answer:

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Step-by-step explanation:

3x+y=6

y=6‐3x—————(i)

2x+4y=4————(ii)

from (i) and (ii)

2x+4(6‐3x)=4

2x+24‐12x=4

‐10x=4‐24

‐10x=‐20

x=2

y =6‐3×2

y=6‐6

y=0

Answer 2

Step-by-step explanation:

4(3x+y=6)

2x+4y=4

1st equation becomes

12x+4y=24 add the both

2x+4y=4

- - -

------------- change the sign to subtract

10x=20

x=2

now apply the value of x in the first equation or second equation

3x+y=6

3×2+y=6

6+y=6

y=0