3-(1x+7)=3(2x+1)

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Solution for 3-(1x+7)=3(2x+1) equation: 



3-(1x+7)=3(2x+1)

We move all terms to the left:

3-(1x+7)-(3(2x+1))=0

We add all the numbers together, and all the variables

-(x+7)-(3(2x+1))+3=0

We get rid of parentheses

-x-(3(2x+1))-7+3=0



We calculate terms in parentheses: -(3(2x+1)), so:

3(2x+1)

We multiply parentheses

6x+3

Back to the equation:

-(6x+3)



We add all the numbers together, and all the variables

-1x-(6x+3)-4=0

We get rid of parentheses

-1x-6x-3-4=0

We add all the numbers together, and all the variables

-7x-7=0

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

-7x=7

x=7/-7

x=-1

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