How do solve the following linear system?: $- 9 x + 5 y = 16, - 7 x + y = - 19$ $-9x + 5y = 16 , -7x + y = -19$ ?

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How do solve the following linear system?: $- 9 x + 5 y = 16, - 7 x + y = - 19$ $-9x + 5y = 16 , -7x + y = -19$ ?

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Answer 1 · 2016-03-14T17:57:49

Use method of simultaneous equations to get
$x = \frac{111}{26} and y = \frac{283}{26}$ $x=111/26 and y=283/26$ .

Explanation:

In the second equation,
$y = 7 x - 19$ $y=7x-19$ .
Now substitute this fact into the first equation to get
$- 9 x + 5 (7 x - 19) = 16$ $-9x+5(7x-19)=16$
$therefore -9x+35x=16+95$
$therefore x=111/26$ .

Now substitute this back to find $y=7(111/26)-19=283/26$ .

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How do solve the following linear system?: $- 9 x + 5 y = 16, - 7 x + y = - 19$ $-9x + 5y = 16 , -7x + y = -19$ ?

1 Answer

Explanation:

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Science

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Humanities

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How do solve the following linear system?: -9x + 5y = 16 , -7x + y = -19 −9x+5y=16,−7x+y=−19-9x + 5y = 16 , -7x + y = -19 ?

1 Answer

Explanation:

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How do solve the following linear system?: $- 9 x + 5 y = 16, - 7 x + y = - 19$ $-9x + 5y = 16 , -7x + y = -19$ ?