samanthamunevar samanthamunevar

16-11-2017
Mathematics

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I’m a little confused Help number 11

Im a little confused Help number 11 class=

Respuesta :

16-11-2017

a.

x + y = 90
Isolate y, so subtract x.
y = -x + 90

c.

y = -30 + 90
y = 60

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