45+2b+3b=180

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Solution for 45+2b+3b=180 equation: 



45+2b+3b=180

We move all terms to the left:

45+2b+3b-(180)=0

We add all the numbers together, and all the variables

5b-135=0

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

5b=135

b=135/5

b=27

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