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07-09-2017
Mathematics

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solve the equation -20=-4x-6x

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sarabullaj sarabullaj

07-09-2017

-20=-4x-6x
4x+6x=20
10x=20
x=20:10
x=2

proof:
-20=-4×2-6×2
-20=-8-12
(-8)+(-12)=-20

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