Question

reduza os termos semelhantes das expressões algébricas dica utilize a regra dos sinais para eliminar ossociadores
A)2×+(2×+y)-3×y=9×
B)5a-{5a-[5a--m)-m]-m}-m
C)-{7a-m-[4m-(4m-(m-m+3a)-4)+m}=
D)5×y-[2×y+5×)+3y-(-×y+×+3×y)]}
E)-{-×-2y+y+[3×+5-y+6y-(×-y)+8}}

Answer 1

Vamos lá aos cálculos.

A)2×+(2×+y)-3×y=9×
2x+2x+y-3xy=9x
4x-9x+y-3xy=0
-5x+y-3xy = 0

B)5a-{5a-[5a--m)-m]-m}-m
5a-5a-5a+m-m-m-m
-5a-2m

C)-{7a-m-[4m-(4m-(m-m+3a)-4)+m}=
-7a+m-4m-4m-m+m-3a-4+m =
-10a-6m-4

D)5×y-[2×y+5×)+3y-(-×y+×+3×y)]}
5xy-2xy-5x+3y+xy-x-3xy
3xy-6x-2xy
xy-6x

E)-{-×-2y+y+[3×+5-y+6y-(×-y)+8}}
+x+2y-y+3x+5-y+6y-x+y+8
3x+y+13+6y
3x+7y+13