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Mathematics 22 Online
OpenStudy (anonymous):

solve: n/42=3/18

OpenStudy (anonymous):

n=7

OpenStudy (anonymous):

n/20=27/36

OpenStudy (anonymous):

cross product : n*18 = 3*42 n = 3*42/18 = 7

OpenStudy (anonymous):

same... n*36 = 27*20 n = 27*20/36 = 15

OpenStudy (anonymous):

3r + 7 = -20

OpenStudy (anonymous):

r=-9

OpenStudy (anonymous):

the solution is 3r=-27 r=-9

OpenStudy (anonymous):

-4n – 12 = 28

OpenStudy (anonymous):

n=-10

OpenStudy (anonymous):

-25 = 14 – 3x

OpenStudy (anonymous):

x=13

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