Question

resolver y copiar en el cuaderno los siguientes casos de ejercicios de signos de agrupación.
1. - (7+3–5)
2. 3-(5–9+1)+(7+3–5)
3. 8+(4–4+1)–(7+3–5)-(8+1–2)
4. 18+9–(7-6+8–2)–(10–5+8)
5. -18–3–(7+6–5–2)–(7–5+2)+(7+3–5)
6. -5+[-3+(8+4–5)–(7+4–6-2)]–4+6
7. -4+{-[-1+(-2+4+6)]}–[(2+9–6-3)]+3 -7 8. 3-(5x2)-(8-1+7)
9. -5+(4x3)–(7x3 )-(-8+3–7)
10. 8+{-2-[-5-(-2x4)–2+4]+3}–[-(2x9]}

Answer 1

Respuesta:

1- (7+3–5)= -5

2- 3-(5–9+1)+(7+3–5)

3-(-3)+(7+3-5)

3+3+(7+3-5)

3+3+5

11

3-8+(4–4+1)–(7+3–5)-(8+1–2)

8+1-(7+3-5)-(8+1-2)

8+1-5-(8+1-2)

8+1-5-7

-3

4- 18+9–(7-6+8–2)–(10–5+8)

18+9-7-(10-5+8)

18+9-7-13

7

5- -18–3–(7+6–5–2)–(7–5+2)+(7+3–5)

-18-3-6-(7-5+2)+(7+3-5)

-18-3-6-4+(7+3-5)

-18-3-6-4+5

-26

6- -5+[-3+(8+4-5)-7+4-6-2]-4+6

-5+(-3+7-7+4-6-2)-4+6

-5+(-3+4-6-2)-4+6

-5-7-4+6

-10

7- -4+{-[-1+(-2+4+6)]}–[(2+9–6-3)]+3 -7

-4-(-1+8)-(2+9-6-3)+3-7

-4-7-(2+9-6-3)+3-7

-4-7-2+3-7

-17

8- 3-(5x2)-(8-1+7)

3-10-(8-1+7)

3-10-14

-21

9- -5+(4x3)–(7x3 )-(-8+3–7)

-5+12-7×3-(-8+3-7)

-5+12-21-(-8+3-7)

-5+12-21-(-12)

-5+12-21+12

-2

10- 8+{-2-[-5-(-2x4)–2+4]+3}–[-(2x9]}

8+(-2-(-5-(-8)-2+4)+3)-(-2 × 9))

8+(-2-(-5+8-2+4)-3)-(-2 × 9))

8+(-2-5+3)-(-(2×9))

8-4-(-(2×9))

8-4+2×9

8-4+18

22