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 calculate terms in parentheses: -(-5(4x+3)+21x), so:

-5(4x+3)+21x

We add all the numbers together, and all the variables

21x-5(4x+3)

We multiply parentheses

21x-20x-15

We add all the numbers together, and all the variables

x-15

Back to the equation:

-(x-15)



We get rid of parentheses

-x+15+7=0

We add all the numbers together, and all the variables

-1x+22=0

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

-x=-22

x=-22/-1

x=+22

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