7+-5(4x+3)=21x

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Solution for 7+-5(4x+3)=21x equation: 



7+-5(4x+3)=21x

We move all terms to the left:

7+-5(4x+3)-(21x)=0

We add all the numbers together, and all the variables

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

We multiply parentheses

-21x-20x-15=0

We add all the numbers together, and all the variables

-41x-15=0

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

-41x=15

x=15/-41

x=-15/41

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