actividad sobre eliminacion de signos de agrupacion

 solucion de ejercicios y su debido proceso:

1. -(5+2)+{-15+2-[-10+2-(5-2)]+10}

-(7)+{-15+2-[-10+2-(3)]+10}

-7+{-15+2-[-10+2-3]+10}

-7+{-15+2-[5]+10}

-7+{-15+2-5+10}

-7+{8}

-7+8 =1

2. 15(3x-2)-7(2x-1)

45x-30-14x+7

31x-23

3. 10m+(2m-5np)+np

12m-4np

4. 15(9-2)+7(6-1)-[7(6+3)-4(3-1)

15(7)+7(5)-[7(9)-4(2)]

105+35-[63-8]

105+35-55

85

5. 15(12-2)-7(8-1)

15(10)-7(7)

150-49

101

6.7(2x+3)-4(x-1)

14x+21-4x+4

10x+25

7. 15(3x-2)+7(2x-1)-[7(2x+3)-4(x-1)

45x-30+14x-7-[14x+21-4x+4]

45x-30+14x-7[10x+25]

45x-30+14x-7-10x+25

49x-62

8. 30-{(2+7)+4-[2+(6+4)-6]}

30-{(9)+4-[2+(10)-6]}

30-{9+4-[2+10-6]}

30-{9+4-[6]}

30-{9+4-6}

30-{7}

30-7

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