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78=-6(8k-9)-12(k+6)

 Oct 28, 2014

Best Answer 

 #1
avatar+23254 
+5

78 = -6(8k - 9) - 12(k + 6)

Use the distributive property:

78 = -48k + 54 - 12k - 72

Simplify:

78 = -60k - 18

Add 18 to both sides:

96 = -60k

Divide by -60 and reduce:

k = 96/-60 = -8/5 

 Oct 28, 2014
 #1
avatar+23254 
+5
Best Answer

78 = -6(8k - 9) - 12(k + 6)

Use the distributive property:

78 = -48k + 54 - 12k - 72

Simplify:

78 = -60k - 18

Add 18 to both sides:

96 = -60k

Divide by -60 and reduce:

k = 96/-60 = -8/5 

geno3141 Oct 28, 2014

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