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What is x?

Achilles
in Linear Algebra and Group Theory

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20x - 6(0.6x - 2) - 8(4 + 0.8x) = 0 
 

Answer is 2 but I got 0.54

Nevermind I got it right, I just messed up decimal and multiplication

Edited by Achilles

28 minutes ago, Achilles said:

20x - 6(0.6x - 2) - 8(4 + 0.8x) = 0 
 

Answer is 2 but I got 0.54

Nevermind I got it right, I just messed up decimal and multiplication

20x=6(0.6-2)+8(4+0.8x)

20x=3.6x-12+32+6.4x

20x=6.4x+3.6x+20

20x-20=6.4x+3.6x

(10(2x-2))/10=6.4x+3.6x/10

2x-2=.64x+.36x

2x-2=x

+2 & -x

2x-x=2

2x-x=x

Therefor, x=2

Edited by Bean_Spiller

  • 10 months later...

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