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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-7(-7x+1)-4(x-3)

We multiply parentheses

49x-4x-7+12

We add all the numbers together, and all the variables

45x+5

Back to the equation:

-(45x+5)



We get rid of parentheses

-45x-5-40=0

We add all the numbers together, and all the variables

-45x-45=0

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

-45x=45

x=45/-45

x=-1

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