Question

X and y is what? and how can i solve this question?

Answer 1

Answer:

x = 535 + 3/4n Over 8 --> Or in simplified form --> 66.875 + 3/32n

y = -166 / 3-4n

Step-by-step explanation:

1-) To find y, we will have to get rid of x in one of the equation.

So, we will multiply first equation by -4.

> -4 ( 2x + ny ) = -4 ( 51 )

> -8x - 4ny = -204

Then we will use the elimination method.

> -8x - 4ny = -204

   8x + 3y = 38

+ -----------------------

> 3y - 4ny = -166

To isolate y, we will factor it out.

> y ( 3 - 4n ) = -166

Finally, we will divide ( 3 - 4n ) from both sides to achieve our desired result that the question asks.

> y = -166 / 3 - 4n

2-) To find x, we will substitute our y result into the second equation.

> 8x + 3 ( -166 / 3 - 4n ) = 38

> 8x - 498 + 1 - 3/4n = 38

> 8x - 497 - 3/4n = 38

> 8x - 3/4n = 535

> 8x = 535 + 3/4n

> x = 535 + 3/4n Over 8

> x = 535/8 + 3/32n

> x = 66.875 + 3/32n

It looks messy but I hope it will be understood.

If I have any inaccuracies please let me know.

Have a nice day and never stop questioning!