4x-9-1=90

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Solution for 4x-9-1=90 equation: 



4x-9-1=90

We move all terms to the left:

4x-9-1-(90)=0

We add all the numbers together, and all the variables

4x-100=0

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

4x=100

x=100/4

x=25

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