7x+3=5(x+9)

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Solution for 7x+3=5(x+9) equation: 



7x+3=5(x+9)

We move all terms to the left:

7x+3-(5(x+9))=0



We calculate terms in parentheses: -(5(x+9)), so:

5(x+9)

We multiply parentheses

5x+45

Back to the equation:

-(5x+45)



We get rid of parentheses

7x-5x-45+3=0

We add all the numbers together, and all the variables

2x-42=0

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

2x=42

x=42/2

x=21

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