How do you solve 7x - 2y = -8 and x = -2?

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Answer 1 · 2016-01-18T16:21:35

$y = -3$

Since you were given the value of $x$ which is $-2$ , all you have to do is substitute this value to the given equation.

Solution:

$7x - 2y = -8$
where $x = -2$

substituting $x$ value in the equation would give us:

$7(-2) - 2y = -8$
$(-14) - 2y = -8$

simplifying equation by transposing $-14$ to the right side,

$-2y = -8 color(blue)(+14$
$-2y = 6$

Divide each side by $-2$ to get the value of $y$ ,

$y = 6/-2$

$y= -3$