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Daniel17
a fost răspuns

a) (3x +10y ) - ( 5x + 4y ) - ( 7x - 2y ) =
b) 8x - 6x + 3xy - ( 2xy + 5x - 16x ) + x =
c) ( - 4a + 3 + 5a ) - ( 6 - a - 16a ) =

Răspuns :

Eurus
A) 1. Desfacem parantezele
3x + 10y - 5x - 4y - 7x + 2y = -9x + 8y 
B) 8x - 6x + 3xy - 2xy - 5x + 16x + x = 14x + xy = x(14 + y)
C) -4a + 3 + 5a - 6 + a + 16a = 18a - 3 = 3(6a - 1)

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