0.8(x+0.3x)-x=40

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Solution for 0.8(x+0.3x)-x=40 equation: 



0.8(x+0.3x)-x=40

We move all terms to the left:

0.8(x+0.3x)-x-(40)=0

We add all the numbers together, and all the variables

0.8(+1.3x)-x-40=0

We add all the numbers together, and all the variables

-1x+0.8(+1.3x)-40=0

We multiply parentheses

-1x+0.8x-40=0

We add all the numbers together, and all the variables

-0.2x-40=0

We move all terms containing x to the left, all other terms to the right

-0.2x=40

x=40/-0.2

x=-200

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