Simplify.Remove grouping symbols and combine like terms. A) 5b+{-[3a+2(5a-2b)]-1}

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`5b +{-[3a +2(5a-2b)]-1}`

Remove the brackets one at a time starting with the innermost bracket. Distribute the 2 between the (5a-2b):


Now remove the next bracket and take care with the negative symbols:


`therefore = 5b-3a -10a +4b-1`

Now combine like terms:


`= 9b-13a-1`



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