Answers

2016-01-11T23:37:52+08:00
A+b+c=90
b=2a+2
c=(a+b)-2

c=(a+b)-2
c=a+2a+2-2
c=3a

a+b+c=90
a+2a+2+3a=90
6a=88
 \frac{6a}{6} = \frac{88}{6}
a= \frac{44}{3}

b=2a+2
b=2( \frac{44}{3} )+2
b= \frac{88}{3}+2
b= \frac{94}{3}

c=(a+b)-2
c=( \frac{44}{3} + \frac{94}{3} -2
c=44

a+b+c=90
 \frac{44}{3} + \frac{94}{3} +44=90
46+44=90
90=90
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