(x+69)+(x+39)=90

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Solution for (x+69)+(x+39)=90 equation: 



(x+69)+(x+39)=90

We move all terms to the left:

(x+69)+(x+39)-(90)=0

We get rid of parentheses

x+x+69+39-90=0

We add all the numbers together, and all the variables

2x+18=0

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

2x=-18

x=-18/2

x=-9

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