(x-60-80)+(x-60)+x=400

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Solution for (x-60-80)+(x-60)+x=400 equation: 



(x-60-80)+(x-60)+x=400

We move all terms to the left:

(x-60-80)+(x-60)+x-(400)=0

We add all the numbers together, and all the variables

(x-140)+(x-60)+x-400=0

We add all the numbers together, and all the variables

x+(x-140)+(x-60)-400=0

We get rid of parentheses

x+x+x-140-60-400=0

We add all the numbers together, and all the variables

3x-600=0

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

3x=600

x=600/3

x=200

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