x+5+7+9=90

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Solution for x+5+7+9=90 equation: 



x+5+7+9=90

We move all terms to the left:

x+5+7+9-(90)=0

We add all the numbers together, and all the variables

x-69=0

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

x=69

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