Leahk11 Leahk11

11-04-2017
Mathematics

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Solve the given system of equations-remember substitution/elimination methods.

-8a=12
4a+8c=0
7b+1c=18

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Аноним Аноним

11-04-2017

-8a = 12
a = 12/-8
a= -3/2

4a+8c=0
4(-3/2)+8c = 0
-6+8c = 0
8c = 6
c = 6/8
c = 3/4

7b+c=18
7b+3/4 = 18
7b = 17 1/4 = 69/4
b = 69/28

a = -3/4 , b = 69/28, c = 3/4

Answer Link

11-04-2017

1.) 1.5 because 12/-8= 1.5

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