If $3x + 5y = 4$ and $8y + 6x = 36$ , what is the value of $-y$ ?

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If $3x + 5y = 4$ and $8y + 6x = 36$ , what is the value of $-y$ ?

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Answer 1 · 2018-08-06T05:32:10

$-y=14$

Explanation:

$3x+5y=4$
$8y+6x=36$
$-y=?$
$3x+5y=4------------(1)$
$8y+6x=36------------(2)$
$(2)$ can be simplified as
$3x+4y=18-----------(3)$
Subtracting (1) from (3)
$4y-5y=18-5$
$-y=14$

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If $3x + 5y = 4$ and $8y + 6x = 36$ , what is the value of $-y$ ?

1 Answer

Explanation:

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If 3x + 5y = 43x + 5y = 4 and 8y + 6x = 368y + 6x = 36, what is the value of -y-y?

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If $3x + 5y = 4$ and $8y + 6x = 36$ , what is the value of $-y$ ?