-4b-21=255

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Solution for -4b-21=255 equation:



-4b-21=255
We move all terms to the left:
-4b-21-(255)=0
We add all the numbers together, and all the variables
-4b-276=0
We move all terms containing b to the left, all other terms to the right
-4b=276
b=276/-4
b=-69

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