(9+3x)+51=90

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Solution for (9+3x)+51=90 equation: 



(9+3x)+51=90

We move all terms to the left:

(9+3x)+51-(90)=0

We add all the numbers together, and all the variables

(3x+9)+51-90=0

We add all the numbers together, and all the variables

(3x+9)-39=0

We get rid of parentheses

3x+9-39=0

We add all the numbers together, and all the variables

3x-30=0

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

3x=30

x=30/3

x=10

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