4=(-1+x)/2

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Solution for 4=(-1+x)/2 equation: 



4=(-1+x)/2

We move all terms to the left:

4-((-1+x)/2)=0

We add all the numbers together, and all the variables

-((x-1)/2)+4=0

We multiply all the terms by the denominator


-((x-1)+4*2)=0



We calculate terms in parentheses: -((x-1)+4*2), so:

(x-1)+4*2

We add all the numbers together, and all the variables

(x-1)+8

We get rid of parentheses

x-1+8

We add all the numbers together, and all the variables

x+7

Back to the equation:

-(x+7)



We get rid of parentheses

-x-7=0

We add all the numbers together, and all the variables

-1x-7=0

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

-x=7

x=7/-1

x=-7

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