Respuesta :

samantharw1014
(5a+7b)-(3a+2b)

When there is a in front of an expression in parentheses, change the sign of each term in the expression
5a+7b-3a-2b
collect the like terms
5a-3a= 2a
7b-2b= 5b

answer: 2a+5b
hope this helps! :)

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