12b+(-4b)+5=13

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Solution for 12b+(-4b)+5=13 equation: 



12b+(-4b)+5=13

We move all terms to the left:

12b+(-4b)+5-(13)=0

We add all the numbers together, and all the variables

12b+(-4b)-8=0

We get rid of parentheses

12b-4b-8=0

We add all the numbers together, and all the variables

8b-8=0

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

8b=8

b=8/8

b=1

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