0.5x+0.1*100=0.4(100+x)

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Solution for 0.5x+0.1*100=0.4(100+x) equation: 



0.5x+0.1*100=0.4(100+x)

We move all terms to the left:

0.5x+0.1*100-(0.4(100+x))=0

We add all the numbers together, and all the variables

0.5x-(0.4(x+100))+0.1*100=0

We add all the numbers together, and all the variables

0.5x-(0.4(x+100))+10=0



We calculate terms in parentheses: -(0.4(x+100)), so:

0.4(x+100)

We multiply parentheses

0.4x+40

Back to the equation:

-(0.4x+40)



We get rid of parentheses

0.5x-0.4x-40+10=0

We add all the numbers together, and all the variables

0.1x-30=0

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

0.1x=30

x=30/0.1

x=300

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