((2*x)+3)=15

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Solution for ((2*x)+3)=15 equation: 



((2*x)+3)=15

We move all terms to the left:

((2*x)+3)-(15)=0

We add all the numbers together, and all the variables

((+2x)+3)-15=0



We calculate terms in parentheses: +((+2x)+3), so:

(+2x)+3

We get rid of parentheses

2x+3

Back to the equation:

+(2x+3)



We get rid of parentheses

2x+3-15=0

We add all the numbers together, and all the variables

2x-12=0

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

2x=12

x=12/2

x=6

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