8x+9=2x+1=90

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Solution for 8x+9=2x+1=90 equation: 



8x+9=2x+1=90

We move all terms to the left:

8x+9-(2x+1)=0

We get rid of parentheses

8x-2x-1+9=0

We add all the numbers together, and all the variables

6x+8=0

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

6x=-8

x=-8/6

x=-1+1/3

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