Question

resuelve las siguentes ecuaciones de primer grado

2x+4x+8=26
R=

4x-2=10+2
R=
X+2x+5x=25+7
R=

5x-3x+8x-6x=100-84

es urgente por favor nesesito respuesta correcta no incorrecta ​

Answer 1

Respuesta:

Soluciones a los ejercicios y problemas

PÁGINA 31

R A CTICA

Números enteros

1 Calcula.

a) 5 + (–3) – (–2) + (4 – 6) – [3 – (6 – 4)]

b)(3 + 6 – 11) · (4 – 2 – 9) · (–1)

c) 5 · [8 – (2 + 3)] – (–4) · [6 – (2 + 7)]

d)(–7) · [4 · (3 – 8) – 5 · (8 – 5)]

a) 5 + (–3) – (–2) + (4 – 6) – [3 – (6 – 4)] = 5 – 3 + 2 + 4 – 6 – 3 + 6 – 4 =

= (5 + 2 + 4 + 6) – (3 + 6 + 3 + 4) =

= 17 – 16 = 1

b) (3 + 6 – 11) · (4 – 2 – 9) · (–1) = (–2) · (–7) · (–1) = –14

c) 5 · [8 – (2 + 3)] – (–4) · [6 – (2 + 7)] = 5 · (8 – 5) – (–4) · (6 – 9) =

= 5 · 3 – (–4) · (–3) = 15 – 12 = 3

d)(–7) · [4 · (3 – 8) – 5 · (8 – 5)] = (–7) · [4 · (–5) – 5 · 3] =

= (–7) · (–20 – 15) = (–7) · (–35) = 245

2 Calcula.

a) |3 + (2 – 5)|

b)|1 – 5 + 31|

c) |20 – (–10 + 9)|

d)|–3 + |2 – 8||

a) |3 + (–3)| = |3 – 3| = |0| = 0

b) |–4 + 31| = |27| = 27

c) |20 – (–1)| = |20 + 1| = |21| = 21

d)|–3 + 1 – 61| = |–3 + 6| = |3| = 3

3 Calcula las siguientes potencias:

(–2)3 –23 2

3

(–2)4 –24 2

0

(–2)3 = –8 –23 = –8 23 = 8 (–2)4 = 16 –24 = –16 20 = 1