3(x+7)-4(4+x)=3x-9

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Solution for 3(x+7)-4(4+x)=3x-9 equation: 



3(x+7)-4(4+x)=3x-9

We move all terms to the left:

3(x+7)-4(4+x)-(3x-9)=0

We add all the numbers together, and all the variables

3(x+7)-4(x+4)-(3x-9)=0

We multiply parentheses

3x-4x-(3x-9)+21-16=0

We get rid of parentheses

3x-4x-3x+9+21-16=0

We add all the numbers together, and all the variables

-4x+14=0

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

-4x=-14

x=-14/-4

x=3+1/2

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