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A +b= 10 and b + c = 100 are given.
Find a + 3b + 2c.

 Sep 12, 2020
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b=10-a

c=a+90

when simplified

a+2b+c=110

a+2b+c=110

a+3b+2c=110+10-a+a+90

That's 210.

 Sep 13, 2020

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