280=x/2+0.09x

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Solution for 280=x/2+0.09x equation: 



280=x/2+0.09x

We move all terms to the left:

280-(x/2+0.09x)=0



Domain of the equation: 2+0.09x)!=0

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

0.09x)!=-2

x!=-2/1

x!=-2

x∈R



We add all the numbers together, and all the variables

-(+0.09x+x/2)+280=0

We get rid of parentheses

-0.09x-x/2+280=0

We multiply all the terms by the denominator


-(0.09x)*2-x+280*2=0

We add all the numbers together, and all the variables

-(+0.09x)*2-x+280*2=0

We add all the numbers together, and all the variables

-1x-(+0.09x)*2+560=0

We multiply parentheses

-1x-0x+560=0

We add all the numbers together, and all the variables

-2x+560=0

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

-2x=-560

x=-560/-2

x=+280

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