(x-10)+(x+40)=90

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Solution for (x-10)+(x+40)=90 equation: 



(x-10)+(x+40)=90

We move all terms to the left:

(x-10)+(x+40)-(90)=0

We get rid of parentheses

x+x-10+40-90=0

We add all the numbers together, and all the variables

2x-60=0

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

2x=60

x=60/2

x=30

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