Question

5x+3y=14
2x+7y=23
find the simultaneous equation ​

Answer 1

Answer:

Question

✳️5x+3y=14,2x+7y=23

find the simultaneous equation

Solution ⬇️

✍️5x+3y=14...(1)x²

✍️2x+7y=23..(2)x⁵

✍️10x+6y=28..(3) equation 1 multiplied by 2

✍️(-)10x+(-)35y=(-)115..(4) equation 2 multiplied by 5..(subtracting eq 4 and 2)

_____________________

✍️-29y=-87

✍️29y=87

$= = > y = \frac{87}{29} = 3$

✳️ Substituting value y=3 in equation 1

✍️5x+3y=14..(1)

✍️5x+3(3)=14

✍️5x+9=14

✍️5x=14-9

✍️5x=5

$= = > x = \frac{5}{5} = 1$

✳️(x, y)(1,3) is the solution of the given quadratic equation

Step-by-step explanation:

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