66=7(7x-1)-6(-x-3)

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Solution for 66=7(7x-1)-6(-x-3) equation: 



66=7(7x-1)-6(-x-3)

We move all terms to the left:

66-(7(7x-1)-6(-x-3))=0

We add all the numbers together, and all the variables

-(7(7x-1)-6(-1x-3))+66=0



We calculate terms in parentheses: -(7(7x-1)-6(-1x-3)), so:

7(7x-1)-6(-1x-3)

We multiply parentheses

49x+6x-7+18

We add all the numbers together, and all the variables

55x+11

Back to the equation:

-(55x+11)



We get rid of parentheses

-55x-11+66=0

We add all the numbers together, and all the variables

-55x+55=0

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

-55x=-55

x=-55/-55

x=1

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