Ayanna01 Ayanna01

10-04-2015
Mathematics

contestada

(-y+5•3)+7.2y-9)=6.2y+n

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alybsinger alybsinger

10-04-2015

(-y+5x3)+(7.2y-9)=6.2y+n
(-y+15)+(7.2y-9)=6.2y+n
since you're adding the two parentheses, you don't need to have them there
-y+15+7.2y-9=6.2y+n
7.2y-y +15-9 =6.2y+n
6.2y + 6 =6.2y+n
6.2y - 6.2y -n = -6
-n=-6
n=6

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