42=(x+40)/4

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Solution for 42=(x+40)/4 equation: 



42=(x+40)/4

We move all terms to the left:

42-((x+40)/4)=0

We multiply all the terms by the denominator


-((x+40)+42*4)=0



We calculate terms in parentheses: -((x+40)+42*4), so:

(x+40)+42*4

We add all the numbers together, and all the variables

(x+40)+168

We get rid of parentheses

x+40+168

We add all the numbers together, and all the variables

x+208

Back to the equation:

-(x+208)



We get rid of parentheses

-x-208=0

We add all the numbers together, and all the variables

-1x-208=0

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

-x=208

x=208/-1

x=-208

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