(7.7x+7.8)+(7.1x+6.3)=129.54

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Solution for (7.7x+7.8)+(7.1x+6.3)=129.54 equation: 



(7.7x+7.8)+(7.1x+6.3)=129.54

We move all terms to the left:

(7.7x+7.8)+(7.1x+6.3)-(129.54)=0

We add all the numbers together, and all the variables

(7.7x+7.8)+(7.1x+6.3)-129.54=0

We get rid of parentheses

7.7x+7.1x+7.8+6.3-129.54=0

We add all the numbers together, and all the variables

14.8x-115.44=0

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

14.8x=115.44

x=115.44/14.8

x=7+6.4347826086957/8.0434782608696

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