(x-50.4)+x=90

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Solution for (x-50.4)+x=90 equation: 



(x-50.4)+x=90

We move all terms to the left:

(x-50.4)+x-(90)=0

We add all the numbers together, and all the variables

x+(x-50.4)-90=0

We get rid of parentheses

x+x-50.4-90=0

We add all the numbers together, and all the variables

2x-140.4=0

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

2x=140.4

x=140.4/2

x=70+0.40000000000001/2

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