Question

3x+y=4
7x+2y=9
try to solve plsss
fast​

Answer 1

Answer:

x = 1 , y = 1

Step-by-step explanation:

3x+y=4 ---------------- equation 1

7x+2y=9 --------------equation 2

multiply equation one with 2 we get , 2(3x+y)=(4)2

6x+2y=8--------------equation 3

substract equation 3 from equation 2

7x+2y=9

(-) 6x+2y=8

(-) (-) = (-)

x = 1

substituting x = 1 , we get y = 1

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Answer 2

Answer:

3x+y=4_______×7

7x+2y=9______×3

21x+7y=28

21x+6y=27

-___-___-___

0+y=1

y=1

3x+y=4

put the value of y

3x+1=4

3x=4-1

3x=3

x=1

x=1,y=1......ans