-3(e-7)=-21

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Solution for -3(e-7)=-21 equation: 



-3(e-7)=-21

We move all terms to the left:

-3(e-7)-(-21)=0

We add all the numbers together, and all the variables

-3(e-7)+21=0

We multiply parentheses

-3e+21+21=0

We add all the numbers together, and all the variables

-3e+42=0

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

-3e=-42

e=-42/-3

e=+14

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