Question

simultaneous equation using cramer's rule 2x+3y=2;x-y/2=1/2​

Answer 1

Answer:

2x+3y=2

x-y/2=1/2

2x-2y=2

Step-by-step explanation:

Dx= |3 2 |

|-2 2|

= 6- (-4)

= 10

Dy= |2 2 |

|2 2|

= 4-4

= 0

D= |2 3|

|2 -2|

= (-4)-6

= 10

x= DX/D= 10/10=1

y= Dy/D= 0/10= 0

X= 1, y= 0

Answer 2

Answer:

HEY MATE

your answer is

x= -2 and y= -1/2

Step-by-step explanation:

see

2x+3y=2 ; x-y/2=1/2

therefore

1. 2x+3y=2. .x × 2-y/2 × 2 = 1/2×2. (mulptiply by each term by 2)
2. therefore 2x+3y = 2 and 2x-y= 1
3. D= 2 ×(-1) - 2×3

= -2 -

D = -8

4. Dx =2×(-1) - 3×1

= -2 -3

Dx= -4

5. Dy= 2×1 = 2×2

= 2-4

Dy = -2

6. therefore

x= Dx/D

= -8/-4

x= -2

7. y = Dy/D

= -2/-4

y= -1/-2

BUT Denominater is never -ve so

y= -1/2

So your answer is

x = -2 & y =-1/2

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