(x+12)+(16+x)=20

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Solution for (x+12)+(16+x)=20 equation: 



(x+12)+(16+x)=20

We move all terms to the left:

(x+12)+(16+x)-(20)=0

We add all the numbers together, and all the variables

(x+12)+(x+16)-20=0

We get rid of parentheses

x+x+12+16-20=0

We add all the numbers together, and all the variables

2x+8=0

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

2x=-8

x=-8/2

x=-4

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