40-8x=3(-7x-1)+4

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Solution for 40-8x=3(-7x-1)+4 equation: 



40-8x=3(-7x-1)+4

We move all terms to the left:

40-8x-(3(-7x-1)+4)=0



We calculate terms in parentheses: -(3(-7x-1)+4), so:

3(-7x-1)+4

We multiply parentheses

-21x-3+4

We add all the numbers together, and all the variables

-21x+1

Back to the equation:

-(-21x+1)



We get rid of parentheses

-8x+21x-1+40=0

We add all the numbers together, and all the variables

13x+39=0

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

13x=-39

x=-39/13

x=-3

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