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OpenStudy (anonymous):

I don't understand this one. the sum of four times a number plus three times another number. I don't know what the sum means.

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OpenStudy (anonymous):

4x + 3x

OpenStudy (anonymous):

sum means addition. so 4 times one number + 3 times another number =4x+3y (you cannot pick x to label both numbers since you dont know that the two numbers are the same)

OpenStudy (anonymous):

I didn't see the = sign on the list of symbols, ty

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