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Reduceți termeni asemenea:
a) 2x+3x-7x+12x
b) 13y-2y+(6y-3y)-y
c)(16a+12a+5a)-(31a-22a)
d)-5b+3b-2b+(7b-b+2b)-b


Răspuns :

a) 2x+3x-7x+12x= 10x...........b)= 13y..............c) = 33a- 9a = 24a...............d) 3b