Ejercicios Suma y resta

EJERCICIOS DE PRÁCTICA

I. Resolver las siguientes sumas:

1.-        12ac – 8ac + 3ac =

2.-        2mn + 6mn – 5mn =

3.-        -3xy + 7xy – 1xy +2xy = 7xy+2xy-3xy-xy =9xy - 4xy = 5xy =

4.-        15ax2 + 2y – 3ax2 + y + 2 – 8ax2 – 5y =

5.-         (11a – 7b + 4c – 3b + 6c – 5a + 4b) + (– 8c – a +2c = 5a -6b + 4c)

6.-        13m – n + 4 – 10m + 5n – 7 +8n – 3 =

7.-        (6x + 8y -5z + 6y) + (3z – 2x – 4y + x + 7z – y) =

8.-        (3xy + 9x – 4ax) + (10a – 7x + 8xy) – 3 =

9.-        7x – 6y + z + 4y – 3z + 9x – 6z + 3y + 5z – 2x =

10.-        (1/2)a + (2/3) x – (3/4)a + (5/6) x + (3/8)a – (7/12) x =

11.-        (3/5)x2 – 4/7xy + y2 – 3/2 x2 + 5/2 xy – 1/3 y2  =

12.-        (4/9)mn + (11/18)m2 + (5/12)n2 + (7/6)m2 + (4/3) mn – (9/4)n2 =

II. Resolver las siguientes sustracciones:

1.-        (10x – 17y + 2z – 5) – (6x – 7y + 5z + 7) =

2.-        (17ax – 7by – 4c) – (15ax + 12by – 10c) =

3.-        (7m2 + 5mn + 6n2) – (5m2 – 8mn – n2)=

4.-        (3x – 2y + 16) – (- x  - 5y - 9) =

5.-        (11ax – 7ay + 4) – (-4ax +8ay -3) =

6.-        (2x + 8y + z) – (5x +3y + 2z) =

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