25-7x=-(-7-3x)-7x

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Solution for 25-7x=-(-7-3x)-7x equation: 



25-7x=-(-7-3x)-7x

We move all terms to the left:

25-7x-(-(-7-3x)-7x)=0

We add all the numbers together, and all the variables

-7x-(-(-3x-7)-7x)+25=0



We calculate terms in parentheses: -(-(-3x-7)-7x), so:

-(-3x-7)-7x

We add all the numbers together, and all the variables

-7x-(-3x-7)

We get rid of parentheses

-7x+3x+7

We add all the numbers together, and all the variables

-4x+7

Back to the equation:

-(-4x+7)



We get rid of parentheses

-7x+4x-7+25=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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