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Mathematics 7 Online
OpenStudy (anonymous):

the sum of two numbers is 42 and the difference is 20 . What are the numbers?

OpenStudy (anonymous):

@whpalmer4

OpenStudy (whpalmer4):

Well, let's write equations to show what we know. What are your two favorite variable names?

OpenStudy (anonymous):

set up a system of equations

OpenStudy (anonymous):

|dw:1395194913242:dw|

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