0,4(x+100)-0,8x=0,2(100-x)

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Solution for 0,4(x+100)-0,8x=0,2(100-x) equation: 



0.4(x+100)-0.8x=0.2(100-x)

We move all terms to the left:

0.4(x+100)-0.8x-(0.2(100-x))=0

We add all the numbers together, and all the variables

0.4(x+100)-0.8x-(0.2(-1x+100))=0

We add all the numbers together, and all the variables

-0.8x+0.4(x+100)-(0.2(-1x+100))=0

We multiply parentheses

-0.8x+0.4x-(0.2(-1x+100))+40=0



We calculate terms in parentheses: -(0.2(-1x+100)), so:

0.2(-1x+100)

We multiply parentheses

-0.2x+20

Back to the equation:

-(-0.2x+20)



We add all the numbers together, and all the variables

-0.4x-(-0.2x+20)+40=0

We get rid of parentheses

-0.4x+0.2x-20+40=0

We add all the numbers together, and all the variables

-0.2x+20=0

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

-0.2x=-20

x=-20/-0.2

x=+100

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