1+2b=4+9

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Solution for 1+2b=4+9 equation: 



1+2b=4+9

We move all terms to the left:

1+2b-(4+9)=0

We add all the numbers together, and all the variables

2b+1-13=0

We add all the numbers together, and all the variables

2b-12=0

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

2b=12

b=12/2

b=6

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