x=25+-2.5(10+-0.4x)

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Solution for x=25+-2.5(10+-0.4x) equation: 



x=25+-2.5(10+-0.4x)

We move all terms to the left:

x-(25+-2.5(10+-0.4x))=0

We add all the numbers together, and all the variables

x-(25+-2.5(-0.4x))=0

We use the square of the difference formula

x-(25-2.5(-0.4x))=0



We calculate terms in parentheses: -(25-2.5(-0.4x)), so:

25-2.5(-0.4x)

determiningTheFunctionDomain
-2.5(-0.4x)+25

We multiply parentheses

-0x+25

We add all the numbers together, and all the variables

-1x+25

Back to the equation:

-(-1x+25)



We get rid of parentheses

x+1x-25=0

We add all the numbers together, and all the variables

2x-25=0

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

2x=25

x=25/2

x=12+1/2

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