3 years ago

4x+9/y+11=0 and 6/y -3x=8

Mathematics

1 answer:

ladessa [460]3 years ago

8 0

9514 1404 393

Answer:

(x, y) = (-2 12/17, -51)

Step-by-step explanation:

Here is the answer to ...

$4x+\dfrac{9}{y}+11=0\\\\\dfrac{6}{y}-3x=8$

If you mean something else, then parentheses are needed.

Let z = 1/y. Then the equations in general form are ...

$4x+9z+11=0\\3x-6z+8=0$

The solution (cross multiplication method) is ...

x = (9·8 -(-6)·11)/(4(-6)-3·9) = 138/-51 = -2 12/17

z = (11·3 -8·4)/-51 = -1/51

y = 1/z = -51

The solution is (x, y) = (-2 12/17, -51).

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4x+9/y+11=0 and 6/y -3x=8​

4x+9/y+11=0 and 6/y -3x=8