A-1=4(a-1)-7

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Solution for A-1=4(a-1)-7 equation: 



-1=4(A-1)-7

We move all terms to the left:

-1-(4(A-1)-7)=0



We calculate terms in parentheses: -(4(A-1)-7), so:

4(A-1)-7

We multiply parentheses

4A-4-7

We add all the numbers together, and all the variables

4A-11

Back to the equation:

-(4A-11)



We get rid of parentheses

-4A+11-1=0

We add all the numbers together, and all the variables

-4A+10=0

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

-4A=-10

A=-10/-4

A=2+1/2

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