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Mathematics 20 Online
OpenStudy (anonymous):

Solve 2x + 5y = 10 for y

OpenStudy (bahrom7893):

OKAY GUYS DON'T POST THE ACTUAL ANSWER!

OpenStudy (bahrom7893):

Let's walk him through!

OpenStudy (anonymous):

Allrite

OpenStudy (bahrom7893):

First of all, KGrace, what would happen if you subtracted 2x from both sides?

OpenStudy (anonymous):

5y=10-2x

OpenStudy (anonymous):

or 5y=-2x+10

OpenStudy (bahrom7893):

Yes, now just divide both sides by 5

OpenStudy (bahrom7893):

it's the same thing KGrace, now divide both sides by 5

OpenStudy (anonymous):

y=-2x+10/5

OpenStudy (bahrom7893):

yup but use parenthesis: y = (-2x+10)/5

OpenStudy (anonymous):

oh okay, you dont simplify the 10?

OpenStudy (anonymous):

y=(-1x+2)/5?

OpenStudy (bahrom7893):

NO you can't do that, -2 is not divisible by 5.

OpenStudy (bahrom7893):

What u can do is: y = (-2x/5) + (10/5) = (-2x/5)+2

OpenStudy (anonymous):

okay thanks!

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