3.5b+9=90

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Solution for 3.5b+9=90 equation: 



3.5b+9=90

We move all terms to the left:

3.5b+9-(90)=0

We add all the numbers together, and all the variables

3.5b-81=0

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

3.5b=81

b=81/3.5

b=23+0.5/3.5

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