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Mathematics 9 Online
OpenStudy (yisselluna):

What is the result of adding the system of equations? 2x + y = 4 3x - y = 6 x = 2 x = 10 5x = 10

Vocaloid (vocaloid):

hint: add the two equations together what is 2x + 3x?

OpenStudy (yisselluna):

idk

Vocaloid (vocaloid):

what is 2 + 3?

OpenStudy (yisselluna):

5

Vocaloid (vocaloid):

good, so what do you think 2x + 3x is?

OpenStudy (yisselluna):

5x?

Vocaloid (vocaloid):

good!

Vocaloid (vocaloid):

now, let's work on the y's what do you think y - y is?

OpenStudy (yisselluna):

y+ ???

Vocaloid (vocaloid):

think of it this way you start with y then you take away y what's left?

OpenStudy (yisselluna):

nun

OpenStudy (yisselluna):

0

Vocaloid (vocaloid):

yup! so y - y = 0

Vocaloid (vocaloid):

last step: 4 + 6 = ?

OpenStudy (yisselluna):

10

Vocaloid (vocaloid):

good! so we put everything together and our final answer is 5x = 10

OpenStudy (yisselluna):

thank you !!!!

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