0.03x=0.04(400+x)

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Solution for 0.03x=0.04(400+x) equation: 



0.03x=0.04(400+x)

We move all terms to the left:

0.03x-(0.04(400+x))=0

We add all the numbers together, and all the variables

0.03x-(0.04(x+400))=0



We calculate terms in parentheses: -(0.04(x+400)), so:

0.04(x+400)

We multiply parentheses

0.04x+16

Back to the equation:

-(0.04x+16)



We get rid of parentheses

0.03x-0.04x-16=0

We add all the numbers together, and all the variables

-0.01x-16=0

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

-0.01x=16

x=16/-0.01

x=-1600

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