69+39+18b=180

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Solution for 69+39+18b=180 equation: 



69+39+18b=180

We move all terms to the left:

69+39+18b-(180)=0

We add all the numbers together, and all the variables

18b-72=0

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

18b=72

b=72/18

b=4

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