0.3=(25+x)/(500+200)

Solution for 0.3=(25+x)/(500+200) equation:

0.3=(25+x)/(500+200)

We move all terms to the left:

0.3-((25+x)/(500+200))=0

We add all the numbers together, and all the variables

-((x+25)/700)+0.3=0

We multiply all the terms by the denominator


-((x+25)+(0.3)*700)=0


We calculate terms in parentheses: -((x+25)+(0.3)*700), so:

(x+25)+(0.3)*700

We add all the numbers together, and all the variables

(x+25)+210

We get rid of parentheses

x+25+210

We add all the numbers together, and all the variables

x+235

Back to the equation:

-(x+235)


We get rid of parentheses

-x-235=0

We add all the numbers together, and all the variables

-1x-235=0

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

-x=235

x=235/-1

x=-235