12(e-1)=3(2e+1)+9

Solution for 12(e-1)=3(2e+1)+9 equation:

12(e-1)=3(2e+1)+9

We move all terms to the left:

12(e-1)-(3(2e+1)+9)=0

We multiply parentheses

12e-(3(2e+1)+9)-12=0


We calculate terms in parentheses: -(3(2e+1)+9), so:

3(2e+1)+9

We multiply parentheses

6e+3+9

We add all the numbers together, and all the variables

6e+12

Back to the equation:

-(6e+12)


We get rid of parentheses

12e-6e-12-12=0

We add all the numbers together, and all the variables

6e-24=0

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

6e=24

e=24/6

e=4