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Mathematics 21 Online
OpenStudy (anonymous):

wut help please WILL GIVE MEDAL x + y = 360 y = 8x

OpenStudy (anonymous):

okay to solve this you can use substitution. y equals 8x so substitute y in the first equation for 8x

OpenStudy (anonymous):

so what does the first equation look like now?

OpenStudy (anonymous):

x+8x=360 but i dont get whats next

OpenStudy (anonymous):

@GretaKnows

OpenStudy (anonymous):

you add together the like terms so x+8x is 9x

OpenStudy (anonymous):

so now it looks like this 9x=360

OpenStudy (anonymous):

just subtract 8 from 360 and that should give you your answer

OpenStudy (anonymous):

ohhhhhhhhhhhh... right. I'm so dumb then you divide on both sides and get 40

OpenStudy (anonymous):

Yep

OpenStudy (anonymous):

THANK YOU SO MUCH

OpenStudy (anonymous):

im working on the same type of problems in school and it was really confusing at first!

OpenStudy (anonymous):

thank you so much you're my hero omg thank youuuuu

OpenStudy (anonymous):

haha no problem!

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