186=-7(1-7a)-3

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Solution for 186=-7(1-7a)-3 equation: 



186=-7(1-7a)-3

We move all terms to the left:

186-(-7(1-7a)-3)=0

We add all the numbers together, and all the variables

-(-7(-7a+1)-3)+186=0



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

-7(-7a+1)-3

We multiply parentheses

49a-7-3

We add all the numbers together, and all the variables

49a-10

Back to the equation:

-(49a-10)



We get rid of parentheses

-49a+10+186=0

We add all the numbers together, and all the variables

-49a+196=0

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

-49a=-196

a=-196/-49

a=+4

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