HELLPP!
how do i "find the equation for y"?
5x - 7y = 10

Question

HELLPP!
how do i "find the equation for y"?
5x - 7y = 10

turtwig · Answer

it's multiple choice

igreen · Answer

You have to get 'y' by itself on one side, start by subtracting 5x to both sides.

turtwig · Answer

-7y=10-5x ?

igreen · Answer

Yep!

Now divide -7 to both sides.

kiakat · Answer

Yes, and then you can divide both sides by -7 to isolate y. Then you have the equation for y ;)

turtwig · Answer

mmm.... k so y=(how do i divide this side by -7?)

turtwig · Answer

@iGreen

igreen · Answer

$-7y = 10 - 5x$

$\dfrac{-7y}{-7} = \dfrac{10}{-7} = \dfrac{5x}{-7}$

igreen · Answer

Sorry there should be a subtraction side on the right, not an equal sign.

kiakat · Answer

When you divide each side by -7, you're getting the y by itself while still keeping the -7 part of the equation

igreen · Answer

Yes, the -7's on the left cancel out, giving us:

$y = \dfrac{5}{7}x - \dfrac{10}{7}$

igreen · Answer

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turtwig · Answer

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