4x+9x-1=90

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



4x+9x-1=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

13x-91=0

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

13x=91

x=91/13

x=7

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