-3x+-3(4x-5)=21

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Solution for -3x+-3(4x-5)=21 equation: 



-3x+-3(4x-5)=21

We move all terms to the left:

-3x+-3(4x-5)-(21)=0

determiningTheFunctionDomain
-3x-3(4x-5)-21+=0

We add all the numbers together, and all the variables

-3x-3(4x-5)=0

We multiply parentheses

-3x-12x+15=0

We add all the numbers together, and all the variables

-15x+15=0

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

-15x=-15

x=-15/-15

x=1

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